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possible deadlock in __folio_end_writeback

Status: upstream: reported C repro on 2025/10/07 21:19
Subsystems: fuse
[Documentation on labels]
Reported-by: syzbot+27727256237e6bdd3649@syzkaller.appspotmail.com
First crash: 146d, last: 18d
▶ ▼ ✨ AI Jobs (7)
ID Workflow Result Correct Bug Created Started Finished Revision Error
e8ccbd54-5e3e-45c6-abe2-9550331dae50 patching 💥 possible deadlock in __folio_end_writeback 2026/01/23 14:52 2026/01/23 14:52 2026/01/23 14:52 7ee46ad36cdaae818f74dea493b5ec30df3fe31b SYZFAIL: failed to recv rpc
8ffb9717-481e-4117-bcae-b9c365dd2e24 patching 💥 possible deadlock in __folio_end_writeback 2026/01/23 13:41 2026/01/23 13:41 2026/01/23 13:41 82c9c083a75aa76345d19c3fc2c0dea5dee268df SYZFAIL: failed to recv rpc
6b3d08d0-4547-4661-91b4-c7e304d4de1a patching 💥 possible deadlock in __folio_end_writeback 2026/01/23 13:24 2026/01/23 13:24 2026/01/23 13:37 82c9c083a75aa76345d19c3fc2c0dea5dee268df SYZFAIL: failed to recv rpc
2762703b-9fa2-4c5a-b9aa-f23935b2ce94 patching 💥 possible deadlock in __folio_end_writeback 2026/01/23 09:30 2026/01/23 09:30 2026/01/23 09:31 4d4acdf994d63787546453380b49732e6f240bf0 make failed: failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "16" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/usr/local/google/home/dvyukov/syzkaller/workdir/cache/build/5aac68e7d22205ac994ecf5500fde16bc25e855d" "-s" "bzImage" "compile_commands.json"]: exit status 2 .config:10150:warning: symbol value 'y' invalid for BOOTPARAM_HUNG_TASK_PANIC * * Restart config... * * * General setup * Compile also drivers which will not load (COMPILE_TEST) [N/y/?] n Compile the kernel with warnings as errors (WERROR) [N/y/?] n Local version - append to kernel release (LOCALVERSION) [] Automatically append version information to the version string (LOCALVERSION_AUTO) [Y/n/?] y Build ID Salt (BUILD_SALT) [] Kernel compression mode > 1. Gzip (KERNEL_GZIP) 2. Bzip2 (KERNEL_BZIP2) 3. LZMA (KERNEL_LZMA) 4. XZ (KERNEL_XZ) 5. LZO (KERNEL_LZO) 6. LZ4 (KERNEL_LZ4) 7. ZSTD (KERNEL_ZSTD) choice[1-7?]: 1 Default init path (DEFAULT_INIT) [] Default hostname (DEFAULT_HOSTNAME) [(none)] (none) System V IPC (SYSVIPC) [Y/n/?] y POSIX Message Queues (POSIX_MQUEUE) [Y/n/?] y General notification queue (WATCH_QUEUE) [Y/n/?] y Enable process_vm_readv/writev syscalls (CROSS_MEMORY_ATTACH) [Y/n/?] y Auditing support (AUDIT) [Y/?] y Preemption Model 1. No Forced Preemption (Server) (PREEMPT_NONE) 2. Voluntary Kernel Preemption (Desktop) (PREEMPT_VOLUNTARY) > 3. Preemptible Kernel (Low-Latency Desktop) (PREEMPT) 4. Scheduler controlled preemption model (PREEMPT_LAZY) choice[1-4?]: 3 Fully Preemptible Kernel (Real-Time) (PREEMPT_RT) [N/y/?] n Preemption behaviour defined on boot (PREEMPT_DYNAMIC) [Y/n/?] y Core Scheduling for SMT (SCHED_CORE) [Y/n/?] y CPU isolation (CPU_ISOLATION) [Y/n/?] y Kernel .config support (IKCONFIG) [Y/n/m/?] y Enable access to .config through /proc/config.gz (IKCONFIG_PROC) [Y/n/?] y Enable kernel headers through /sys/kernel/kheaders.tar.xz (IKHEADERS) [N/m/y/?] n Kernel log buffer size (16 => 64KB, 17 => 128KB) (LOG_BUF_SHIFT) [18] 18 CPU kernel log buffer size contribution (13 => 8 KB, 17 => 128KB) (LOG_CPU_MAX_BUF_SHIFT) [12] 12 Printk indexing debugfs interface (PRINTK_INDEX) [N/y/?] n Memory placement aware NUMA scheduler (NUMA_BALANCING) [Y/n/?] y Automatically enable NUMA aware memory/task placement (NUMA_BALANCING_DEFAULT_ENABLED) [Y/n/?] y Checkpoint/restore support (CHECKPOINT_RESTORE) [Y/n/?] y Automatic process group scheduling (SCHED_AUTOGROUP) [N/y/?] n Kernel->user space relay support (formerly relayfs) (RELAY) [Y/?] y Initial RAM filesystem and RAM disk (initramfs/initrd) support (BLK_DEV_INITRD) [Y/n/?] y Initramfs source file(s) (INITRAMFS_SOURCE) [] Support initial ramdisk/ramfs compressed using gzip (RD_GZIP) [Y/n/?] y Support initial ramdisk/ramfs compressed using bzip2 (RD_BZIP2) [Y/n/?] y Support initial ramdisk/ramfs compressed using LZMA (RD_LZMA) [Y/n/?] y Support initial ramdisk/ramfs compressed using XZ (RD_XZ) [Y/n/?] y Support initial ramdisk/ramfs compressed using LZO (RD_LZO) [Y/n/?] y Support initial ramdisk/ramfs compressed using LZ4 (RD_LZ4) [Y/n/?] y Support initial ramdisk/ramfs compressed using ZSTD (RD_ZSTD) [Y/n/?] y Boot config support (BOOT_CONFIG) [N/y/?] n Length to try to wrap the cmdline when logged at boot (CMDLINE_LOG_WRAP_IDEAL_LEN) [1021] (NEW) Error in reading or end of file. Preserve cpio archive mtimes in initramfs (INITRAMFS_PRESERVE_MTIME) [Y/n/?] y Compiler optimization level > 1. Optimize for performance (-O2) (CC_OPTIMIZE_FOR_PERFORMANCE) 2. Optimize for size (-Os) (CC_OPTIMIZE_FOR_SIZE) choice[1-2?]: 1 Sysfs syscall support (SYSFS_SYSCALL) [Y/n/?] y * * Configure standard kernel features (expert users) * Configure standard kernel features (expert users) (EXPERT) [Y/n/?] y Enable 16-bit UID system calls (UID16) [Y/n/?] y Multiple users, groups and capabilities support (MULTIUSER) [Y/n/?] y sgetmask/ssetmask syscalls support (SGETMASK_SYSCALL) [Y/n/?] y open by fhandle syscalls (FHANDLE) [Y/n/?] y Posix Clocks & timers (POSIX_TIMERS) [Y/n/?] y Enable support for p
0ed30e2a-8d6d-4a05-a701-8e9bc6c4d6f7 patching 💥 possible deadlock in __folio_end_writeback 2026/01/23 09:25 2026/01/23 09:25 2026/01/23 09:26 4d4acdf994d63787546453380b49732e6f240bf0 make failed: failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "16" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/usr/local/google/home/dvyukov/syzkaller/workdir/cache/build/5aac68e7d22205ac994ecf5500fde16bc25e855d" "-s" "bzImage" "compile_commands.json"]: exit status 2 .config:10150:warning: symbol value 'y' invalid for BOOTPARAM_HUNG_TASK_PANIC * * Restart config... * * * General setup * Compile also drivers which will not load (COMPILE_TEST) [N/y/?] n Compile the kernel with warnings as errors (WERROR) [N/y/?] n Local version - append to kernel release (LOCALVERSION) [] Automatically append version information to the version string (LOCALVERSION_AUTO) [Y/n/?] y Build ID Salt (BUILD_SALT) [] Kernel compression mode > 1. Gzip (KERNEL_GZIP) 2. Bzip2 (KERNEL_BZIP2) 3. LZMA (KERNEL_LZMA) 4. XZ (KERNEL_XZ) 5. LZO (KERNEL_LZO) 6. LZ4 (KERNEL_LZ4) 7. ZSTD (KERNEL_ZSTD) choice[1-7?]: 1 Default init path (DEFAULT_INIT) [] Default hostname (DEFAULT_HOSTNAME) [(none)] (none) System V IPC (SYSVIPC) [Y/n/?] y POSIX Message Queues (POSIX_MQUEUE) [Y/n/?] y General notification queue (WATCH_QUEUE) [Y/n/?] y Enable process_vm_readv/writev syscalls (CROSS_MEMORY_ATTACH) [Y/n/?] y Auditing support (AUDIT) [Y/?] y Preemption Model 1. No Forced Preemption (Server) (PREEMPT_NONE) 2. Voluntary Kernel Preemption (Desktop) (PREEMPT_VOLUNTARY) > 3. Preemptible Kernel (Low-Latency Desktop) (PREEMPT) 4. Scheduler controlled preemption model (PREEMPT_LAZY) choice[1-4?]: 3 Fully Preemptible Kernel (Real-Time) (PREEMPT_RT) [N/y/?] n Preemption behaviour defined on boot (PREEMPT_DYNAMIC) [Y/n/?] y Core Scheduling for SMT (SCHED_CORE) [Y/n/?] y CPU isolation (CPU_ISOLATION) [Y/n/?] y Kernel .config support (IKCONFIG) [Y/n/m/?] y Enable access to .config through /proc/config.gz (IKCONFIG_PROC) [Y/n/?] y Enable kernel headers through /sys/kernel/kheaders.tar.xz (IKHEADERS) [N/m/y/?] n Kernel log buffer size (16 => 64KB, 17 => 128KB) (LOG_BUF_SHIFT) [18] 18 CPU kernel log buffer size contribution (13 => 8 KB, 17 => 128KB) (LOG_CPU_MAX_BUF_SHIFT) [12] 12 Printk indexing debugfs interface (PRINTK_INDEX) [N/y/?] n Memory placement aware NUMA scheduler (NUMA_BALANCING) [Y/n/?] y Automatically enable NUMA aware memory/task placement (NUMA_BALANCING_DEFAULT_ENABLED) [Y/n/?] y Checkpoint/restore support (CHECKPOINT_RESTORE) [Y/n/?] y Automatic process group scheduling (SCHED_AUTOGROUP) [N/y/?] n Kernel->user space relay support (formerly relayfs) (RELAY) [Y/?] y Initial RAM filesystem and RAM disk (initramfs/initrd) support (BLK_DEV_INITRD) [Y/n/?] y Initramfs source file(s) (INITRAMFS_SOURCE) [] Support initial ramdisk/ramfs compressed using gzip (RD_GZIP) [Y/n/?] y Support initial ramdisk/ramfs compressed using bzip2 (RD_BZIP2) [Y/n/?] y Support initial ramdisk/ramfs compressed using LZMA (RD_LZMA) [Y/n/?] y Support initial ramdisk/ramfs compressed using XZ (RD_XZ) [Y/n/?] y Support initial ramdisk/ramfs compressed using LZO (RD_LZO) [Y/n/?] y Support initial ramdisk/ramfs compressed using LZ4 (RD_LZ4) [Y/n/?] y Support initial ramdisk/ramfs compressed using ZSTD (RD_ZSTD) [Y/n/?] y Boot config support (BOOT_CONFIG) [N/y/?] n Length to try to wrap the cmdline when logged at boot (CMDLINE_LOG_WRAP_IDEAL_LEN) [1021] (NEW) Error in reading or end of file. Preserve cpio archive mtimes in initramfs (INITRAMFS_PRESERVE_MTIME) [Y/n/?] y Compiler optimization level > 1. Optimize for performance (-O2) (CC_OPTIMIZE_FOR_PERFORMANCE) 2. Optimize for size (-Os) (CC_OPTIMIZE_FOR_SIZE) choice[1-2?]: 1 Sysfs syscall support (SYSFS_SYSCALL) [Y/n/?] y * * Configure standard kernel features (expert users) * Configure standard kernel features (expert users) (EXPERT) [Y/n/?] y Enable 16-bit UID system calls (UID16) [Y/n/?] y Multiple users, groups and capabilities support (MULTIUSER) [Y/n/?] y sgetmask/ssetmask syscalls support (SGETMASK_SYSCALL) [Y/n/?] y open by fhandle syscalls (FHANDLE) [Y/n/?] y Posix Clocks & timers (POSIX_TIMERS) [Y/n/?] y Enable support for p
4981f3d8-1888-4659-837f-561ed4add99f patching 💥 possible deadlock in __folio_end_writeback 2026/01/23 09:20 2026/01/23 09:20 2026/01/23 09:21 4d4acdf994d63787546453380b49732e6f240bf0 make failed: failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "16" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/usr/local/google/home/dvyukov/syzkaller/workdir/cache/build/5aac68e7d22205ac994ecf5500fde16bc25e855d" "-s" "bzImage" "compile_commands.json"]: exit status 2 /bin/sh: line 1: flex: command not found make[4]: *** [/usr/local/google/home/dvyukov/syzkaller/workdir/cache/src/56c37daf054285e608d3681723509574c876d55b/scripts/Makefile.host:9: scripts/kconfig/lexer.lex.c] Error 127 make[4]: *** Waiting for unfinished jobs.... /bin/sh: line 1: bison: command not found make[4]: *** [/usr/local/google/home/dvyukov/syzkaller/workdir/cache/src/56c37daf054285e608d3681723509574c876d55b/scripts/Makefile.host:17: scripts/kconfig/parser.tab.h] Error 127 make[3]: *** [/usr/local/google/home/dvyukov/syzkaller/workdir/cache/src/56c37daf054285e608d3681723509574c876d55b/Makefile:742: syncconfig] Error 2 /usr/local/google/home/dvyukov/syzkaller/workdir/cache/src/56c37daf054285e608d3681723509574c876d55b/Makefile:839: include/config/auto.conf.cmd: No such file or directory make[2]: *** [/usr/local/google/home/dvyukov/syzkaller/workdir/cache/src/56c37daf054285e608d3681723509574c876d55b/Makefile:862: include/config/auto.conf] Error 2 make[1]: *** [/usr/local/google/home/dvyukov/syzkaller/workdir/cache/src/56c37daf054285e608d3681723509574c876d55b/Makefile:248: __sub-make] Error 2 make: *** [Makefile:248: __sub-make] Error 2
844b466e-c0c2-4683-af25-74915559d86b patching 💥 possible deadlock in __folio_end_writeback 2026/01/23 08:06 2026/01/23 08:06 2026/01/23 08:18 499a21815ec0ab13dbfc80e05fc32aadbc482145 failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "16" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/usr/local/google/home/dvyukov/syzkaller/workdir/cache/build/5aac68e7d22205ac994ecf5500fde16bc25e855d" "bzImage" "compile_commands.json"]: exit status 2
▶ ▼ Discussions (5)
Title Replies (including bot) Last reply
[syzbot] Monthly fuse report (Jan 2026) 0 (1) 2026/01/30 12:50
[syzbot] Monthly fuse report (Dec 2025) 0 (1) 2025/12/30 09:53
[syzbot] [fuse?] possible deadlock in __folio_end_writeback 3 (6) 2025/11/30 22:47
[syzbot] Monthly fuse report (Nov 2025) 0 (1) 2025/11/28 21:22
[syzbot] Monthly fuse report (Oct 2025) 0 (1) 2025/10/29 09:50
▶ ▼ Last patch testing requests (12)
Created Duration User Patch Repo Result
2026/02/25 09:49 38m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/25 09:49 29m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/24 17:47 45m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/24 17:47 37m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/24 17:47 2h24m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/24 17:47 2h22m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/24 17:47 31m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/23 14:48 1h08m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/23 14:48 27m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/02/23 14:48 34m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2025/10/09 08:55 20m hdanton@sina.com patch upstream OK log
2025/10/08 01:10 20m hdanton@sina.com patch upstream OK log

Sample crash report:
=====================================================
WARNING: HARDIRQ-safe -> HARDIRQ-unsafe lock order detected
syzkaller #0 Not tainted
-----------------------------------------------------
syz.4.21/6846 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffff800097625150 (&p->sequence){+.-.}-{0:0}, at: __fprop_add_percpu_max+0x130/0x1f4 lib/flex_proportions.c:186

and this task is already holding:
ffff0000f7d10240 (&xa->xa_lock#10){-.-.}-{3:3}, at: __folio_end_writeback+0x10c/0x6f8 mm/page-writeback.c:2990
which would create a new lock dependency:
 (&xa->xa_lock#10){-.-.}-{3:3} -> (&p->sequence){+.-.}-{0:0}

but this new dependency connects a HARDIRQ-irq-safe lock:
 (&xa->xa_lock#10){-.-.}-{3:3}

... which became HARDIRQ-irq-safe at:
  lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
  __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
  _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
  __folio_end_writeback+0x10c/0x6f8 mm/page-writeback.c:2990
  folio_end_writeback_no_dropbehind+0xd0/0x204 mm/filemap.c:1661
  folio_end_writeback+0xd8/0x248 mm/filemap.c:1687
  end_buffer_async_write+0x20c/0x350 fs/buffer.c:419
  end_bio_bh_io_sync+0xb0/0x184 fs/buffer.c:2776
  bio_endio+0x8d4/0x910 block/bio.c:1675
  blk_complete_request block/blk-mq.c:908 [inline]
  blk_mq_end_request_batch+0x49c/0x105c block/blk-mq.c:1202
  nvme_complete_batch drivers/nvme/host/nvme.h:802 [inline]
  nvme_pci_complete_batch drivers/nvme/host/pci.c:1348 [inline]
  nvme_irq+0x1ec/0x240 drivers/nvme/host/pci.c:1450
  __handle_irq_event_percpu+0x20c/0x8e4 kernel/irq/handle.c:211
  handle_irq_event_percpu kernel/irq/handle.c:248 [inline]
  handle_irq_event+0x9c/0x1d0 kernel/irq/handle.c:265
  handle_fasteoi_irq+0x328/0x8d8 kernel/irq/chip.c:764
  generic_handle_irq_desc include/linux/irqdesc.h:172 [inline]
  handle_irq_desc kernel/irq/irqdesc.c:669 [inline]
  generic_handle_domain_irq+0xe0/0x140 kernel/irq/irqdesc.c:725
  __gic_handle_irq drivers/irqchip/irq-gic-v3.c:825 [inline]
  __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:876 [inline]
  gic_handle_irq+0x6c/0x18c drivers/irqchip/irq-gic-v3.c:920
  do_interrupt_handler+0xe0/0x138 arch/arm64/kernel/entry-common.c:137
  __el1_irq arch/arm64/kernel/entry-common.c:497 [inline]
  el1_interrupt+0x3c/0x60 arch/arm64/kernel/entry-common.c:510
  el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
  el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
  __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
  arch_local_irq_restore+0x8/0xc arch/arm64/include/asm/irqflags.h:195
  lock_is_held include/linux/lockdep.h:249 [inline]
  rcu_read_lock_held+0x34/0x50 kernel/rcu/update.c:351
  __find_rr_leaf+0x2d4/0x5c8 net/ipv6/route.c:833
  find_rr_leaf net/ipv6/route.c:889 [inline]
  rt6_select net/ipv6/route.c:933 [inline]
  fib6_table_lookup+0x308/0x8b8 net/ipv6/route.c:2233
  ip6_pol_route+0x1f8/0x101c net/ipv6/route.c:2269
  ip6_pol_route_input+0x74/0x94 net/ipv6/route.c:2326
  pol_lookup_func include/net/ip6_fib.h:617 [inline]
  fib6_rule_lookup+0x174/0x45c net/ipv6/fib6_rules.c:120
  ip6_route_input_lookup net/ipv6/route.c:2338 [inline]
  ip6_route_input+0x5d0/0x930 net/ipv6/route.c:2641
  ip6_rcv_finish_core+0x218/0x3c8 net/ipv6/ip6_input.c:66
  ip6_rcv_finish+0x120/0x21c net/ipv6/ip6_input.c:77
  NF_HOOK+0x2c4/0x358 include/linux/netfilter.h:318
  ipv6_rcv+0x9c/0xbc net/ipv6/ip6_input.c:311
  __netif_receive_skb_one_core net/core/dev.c:6137 [inline]
  __netif_receive_skb+0xcc/0x2a8 net/core/dev.c:6250
  process_backlog+0x608/0x10e8 net/core/dev.c:6602
  __napi_poll+0xb0/0x310 net/core/dev.c:7666
  napi_poll net/core/dev.c:7729 [inline]
  net_rx_action+0x548/0xcf0 net/core/dev.c:7881
  handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
  __do_softirq+0x14/0x20 kernel/softirq.c:656
  ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68
  call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
  do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
  do_softirq+0x90/0xf8 kernel/softirq.c:523
  __local_bh_enable_ip+0x240/0x35c kernel/softirq.c:450
  local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33
  rcu_read_unlock_bh include/linux/rcupdate.h:936 [inline]
  __dev_queue_xmit+0x1464/0x2a68 net/core/dev.c:4844
  dev_queue_xmit include/linux/netdevice.h:3381 [inline]
  neigh_hh_output include/net/neighbour.h:540 [inline]
  neigh_output include/net/neighbour.h:554 [inline]
  ip6_finish_output2+0x1150/0x1a78 net/ipv6/ip6_output.c:136
  __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
  ip6_finish_output+0x418/0x7b4 net/ipv6/ip6_output.c:220
  NF_HOOK_COND include/linux/netfilter.h:307 [inline]
  ip6_output+0x2c8/0x640 net/ipv6/ip6_output.c:247
  dst_output include/net/dst.h:464 [inline]
  NF_HOOK+0x15c/0x430 include/linux/netfilter.h:318
  mld_sendpack+0x7fc/0x100c net/ipv6/mcast.c:1855
  mld_send_initial_cr+0x34c/0x534 net/ipv6/mcast.c:2271
  ipv6_mc_dad_complete+0x74/0x3a8 net/ipv6/mcast.c:2279
  addrconf_dad_completed+0x604/0xb74 net/ipv6/addrconf.c:4340
  addrconf_dad_work+0x928/0x10cc net/ipv6/addrconf.c:-1
  process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
  process_scheduled_works kernel/workqueue.c:3340 [inline]
  worker_thread+0x958/0xed8 kernel/workqueue.c:3421
  kthread+0x5fc/0x75c kernel/kthread.c:463
  ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844

to a HARDIRQ-irq-unsafe lock:
 (&p->sequence){+.-.}-{0:0}

... which became HARDIRQ-irq-unsafe at:
...
  lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
  do_write_seqcount_begin_nested include/linux/seqlock.h:477 [inline]
  do_write_seqcount_begin include/linux/seqlock.h:503 [inline]
  fprop_new_period+0x3b8/0x718 lib/flex_proportions.c:74
  writeout_period+0x94/0x11c mm/page-writeback.c:615
  call_timer_fn+0x19c/0x814 kernel/time/timer.c:1748
  expire_timers kernel/time/timer.c:1799 [inline]
  __run_timers kernel/time/timer.c:2373 [inline]
  __run_timer_base+0x51c/0x76c kernel/time/timer.c:2385
  run_timer_base kernel/time/timer.c:2394 [inline]
  run_timer_softirq+0x11c/0x194 kernel/time/timer.c:2405
  handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
  __do_softirq+0x14/0x20 kernel/softirq.c:656
  ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68
  call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
  do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
  invoke_softirq kernel/softirq.c:503 [inline]
  __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723
  irq_exit_rcu+0x14/0x84 kernel/softirq.c:739
  __el1_irq arch/arm64/kernel/entry-common.c:498 [inline]
  el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:510
  el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
  el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
  __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
  arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline]
  __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
  _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194
  spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
  unlock_task_sighand include/linux/sched/signal.h:756 [inline]
  do_send_sig_info kernel/signal.c:1270 [inline]
  do_send_specific+0x1cc/0x2cc kernel/signal.c:4131
  do_tkill kernel/signal.c:4152 [inline]
  __do_sys_tgkill kernel/signal.c:4171 [inline]
  __se_sys_tgkill kernel/signal.c:4165 [inline]
  __arm64_sys_tgkill+0x12c/0x188 kernel/signal.c:4165
  __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
  invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
  el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
  do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
  el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
  el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
  el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

other info that might help us debug this:

 Possible interrupt unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&p->sequence);
                               local_irq_disable();
                               lock(&xa->xa_lock#10);
                               lock(&p->sequence);
  <Interrupt>
    lock(&xa->xa_lock#10);

 *** DEADLOCK ***

2 locks held by syz.4.21/6846:
 #0: ffff0000f7d10638 (&fi->lock){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #0: ffff0000f7d10638 (&fi->lock){+.+.}-{3:3}, at: fuse_writepages_send fs/fuse/file.c:2156 [inline]
 #0: ffff0000f7d10638 (&fi->lock){+.+.}-{3:3}, at: fuse_iomap_writeback_range+0x674/0x149c fs/fuse/file.c:2225
 #1: ffff0000f7d10240 (&xa->xa_lock#10){-.-.}-{3:3}, at: __folio_end_writeback+0x10c/0x6f8 mm/page-writeback.c:2990

the dependencies between HARDIRQ-irq-safe lock and the holding lock:
-> (&xa->xa_lock#10){-.-.}-{3:3} {
   IN-HARDIRQ-W at:
                    lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
                    __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                    _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
                    __folio_end_writeback+0x10c/0x6f8 mm/page-writeback.c:2990
                    folio_end_writeback_no_dropbehind+0xd0/0x204 mm/filemap.c:1661
                    folio_end_writeback+0xd8/0x248 mm/filemap.c:1687
                    end_buffer_async_write+0x20c/0x350 fs/buffer.c:419
                    end_bio_bh_io_sync+0xb0/0x184 fs/buffer.c:2776
                    bio_endio+0x8d4/0x910 block/bio.c:1675
                    blk_complete_request block/blk-mq.c:908 [inline]
                    blk_mq_end_request_batch+0x49c/0x105c block/blk-mq.c:1202
                    nvme_complete_batch drivers/nvme/host/nvme.h:802 [inline]
                    nvme_pci_complete_batch drivers/nvme/host/pci.c:1348 [inline]
                    nvme_irq+0x1ec/0x240 drivers/nvme/host/pci.c:1450
                    __handle_irq_event_percpu+0x20c/0x8e4 kernel/irq/handle.c:211
                    handle_irq_event_percpu kernel/irq/handle.c:248 [inline]
                    handle_irq_event+0x9c/0x1d0 kernel/irq/handle.c:265
                    handle_fasteoi_irq+0x328/0x8d8 kernel/irq/chip.c:764
                    generic_handle_irq_desc include/linux/irqdesc.h:172 [inline]
                    handle_irq_desc kernel/irq/irqdesc.c:669 [inline]
                    generic_handle_domain_irq+0xe0/0x140 kernel/irq/irqdesc.c:725
                    __gic_handle_irq drivers/irqchip/irq-gic-v3.c:825 [inline]
                    __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:876 [inline]
                    gic_handle_irq+0x6c/0x18c drivers/irqchip/irq-gic-v3.c:920
                    do_interrupt_handler+0xe0/0x138 arch/arm64/kernel/entry-common.c:137
                    __el1_irq arch/arm64/kernel/entry-common.c:497 [inline]
                    el1_interrupt+0x3c/0x60 arch/arm64/kernel/entry-common.c:510
                    el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
                    el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
                    __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
                    arch_local_irq_restore+0x8/0xc arch/arm64/include/asm/irqflags.h:195
                    lock_is_held include/linux/lockdep.h:249 [inline]
                    rcu_read_lock_held+0x34/0x50 kernel/rcu/update.c:351
                    __find_rr_leaf+0x2d4/0x5c8 net/ipv6/route.c:833
                    find_rr_leaf net/ipv6/route.c:889 [inline]
                    rt6_select net/ipv6/route.c:933 [inline]
                    fib6_table_lookup+0x308/0x8b8 net/ipv6/route.c:2233
                    ip6_pol_route+0x1f8/0x101c net/ipv6/route.c:2269
                    ip6_pol_route_input+0x74/0x94 net/ipv6/route.c:2326
                    pol_lookup_func include/net/ip6_fib.h:617 [inline]
                    fib6_rule_lookup+0x174/0x45c net/ipv6/fib6_rules.c:120
                    ip6_route_input_lookup net/ipv6/route.c:2338 [inline]
                    ip6_route_input+0x5d0/0x930 net/ipv6/route.c:2641
                    ip6_rcv_finish_core+0x218/0x3c8 net/ipv6/ip6_input.c:66
                    ip6_rcv_finish+0x120/0x21c net/ipv6/ip6_input.c:77
                    NF_HOOK+0x2c4/0x358 include/linux/netfilter.h:318
                    ipv6_rcv+0x9c/0xbc net/ipv6/ip6_input.c:311
                    __netif_receive_skb_one_core net/core/dev.c:6137 [inline]
                    __netif_receive_skb+0xcc/0x2a8 net/core/dev.c:6250
                    process_backlog+0x608/0x10e8 net/core/dev.c:6602
                    __napi_poll+0xb0/0x310 net/core/dev.c:7666
                    napi_poll net/core/dev.c:7729 [inline]
                    net_rx_action+0x548/0xcf0 net/core/dev.c:7881
                    handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
                    __do_softirq+0x14/0x20 kernel/softirq.c:656
                    ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68
                    call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
                    do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
                    do_softirq+0x90/0xf8 kernel/softirq.c:523
                    __local_bh_enable_ip+0x240/0x35c kernel/softirq.c:450
                    local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33
                    rcu_read_unlock_bh include/linux/rcupdate.h:936 [inline]
                    __dev_queue_xmit+0x1464/0x2a68 net/core/dev.c:4844
                    dev_queue_xmit include/linux/netdevice.h:3381 [inline]
                    neigh_hh_output include/net/neighbour.h:540 [inline]
                    neigh_output include/net/neighbour.h:554 [inline]
                    ip6_finish_output2+0x1150/0x1a78 net/ipv6/ip6_output.c:136
                    __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
                    ip6_finish_output+0x418/0x7b4 net/ipv6/ip6_output.c:220
                    NF_HOOK_COND include/linux/netfilter.h:307 [inline]
                    ip6_output+0x2c8/0x640 net/ipv6/ip6_output.c:247
                    dst_output include/net/dst.h:464 [inline]
                    NF_HOOK+0x15c/0x430 include/linux/netfilter.h:318
                    mld_sendpack+0x7fc/0x100c net/ipv6/mcast.c:1855
                    mld_send_initial_cr+0x34c/0x534 net/ipv6/mcast.c:2271
                    ipv6_mc_dad_complete+0x74/0x3a8 net/ipv6/mcast.c:2279
                    addrconf_dad_completed+0x604/0xb74 net/ipv6/addrconf.c:4340
                    addrconf_dad_work+0x928/0x10cc net/ipv6/addrconf.c:-1
                    process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
                    process_scheduled_works kernel/workqueue.c:3340 [inline]
                    worker_thread+0x958/0xed8 kernel/workqueue.c:3421
                    kthread+0x5fc/0x75c kernel/kthread.c:463
                    ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
   IN-SOFTIRQ-W at:
                    lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
                    __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
                    _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
                    __folio_end_writeback+0x10c/0x6f8 mm/page-writeback.c:2990
                    folio_end_writeback_no_dropbehind+0xd0/0x204 mm/filemap.c:1661
                    folio_end_writeback+0xd8/0x248 mm/filemap.c:1687
                    end_buffer_async_write+0x20c/0x350 fs/buffer.c:419
                    end_bio_bh_io_sync+0xb0/0x184 fs/buffer.c:2776
                    bio_endio+0x8d4/0x910 block/bio.c:1675
                    blk_complete_request block/blk-mq.c:908 [inline]
                    blk_mq_end_request_batch+0x49c/0x105c block/blk-mq.c:1202
                    nvme_complete_batch drivers/nvme/host/nvme.h:802 [inline]
                    nvme_pci_complete_batch drivers/nvme/host/pci.c:1348 [inline]
                    nvme_irq+0x1ec/0x240 drivers/nvme/host/pci.c:1450
                    __handle_irq_event_percpu+0x20c/0x8e4 kernel/irq/handle.c:211
                    handle_irq_event_percpu kernel/irq/handle.c:248 [inline]
                    handle_irq_event+0x9c/0x1d0 kernel/irq/handle.c:265
                    handle_fasteoi_irq+0x328/0x8d8 kernel/irq/chip.c:764
                    generic_handle_irq_desc include/linux/irqdesc.h:172 [inline]
                    handle_irq_desc kernel/irq/irqdesc.c:669 [inline]
                    generic_handle_domain_irq+0xe0/0x140 kernel/irq/irqdesc.c:725
                    __gic_handle_irq drivers/irqchip/irq-gic-v3.c:825 [inline]
                    __gic_handle_irq_from_irqson drivers/irqchip/irq-gic-v3.c:876 [inline]
                    gic_handle_irq+0x6c/0x18c drivers/irqchip/irq-gic-v3.c:920
                    do_interrupt_handler+0xe0/0x138 arch/arm64/kernel/entry-common.c:137
                    __el1_irq arch/arm64/kernel/entry-common.c:497 [inline]
                    el1_interrupt+0x3c/0x60 arch/arm64/kernel/entry-common.c:510
                    el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
                    el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
                    __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
                    arch_local_irq_restore+0x8/0xc arch/arm64/include/asm/irqflags.h:195
                    lock_is_held include/linux/lockdep.h:249 [inline]
                    rcu_read_lock_held+0x34/0x50 kernel/rcu/update.c:351
                    __find_rr_leaf+0x2d4/0x5c8 net/ipv6/route.c:833
                    find_rr_leaf net/ipv6/route.c:889 [inline]
                    rt6_select net/ipv6/route.c:933 [inline]
                    fib6_table_lookup+0x308/0x8b8 net/ipv6/route.c:2233
                    ip6_pol_route+0x1f8/0x101c net/ipv6/route.c:2269
                    ip6_pol_route_input+0x74/0x94 net/ipv6/route.c:2326
                    pol_lookup_func include/net/ip6_fib.h:617 [inline]
                    fib6_rule_lookup+0x174/0x45c net/ipv6/fib6_rules.c:120
                    ip6_route_input_lookup net/ipv6/route.c:2338 [inline]
                    ip6_route_input+0x5d0/0x930 net/ipv6/route.c:2641
                    ip6_rcv_finish_core+0x218/0x3c8 net/ipv6/ip6_input.c:66
                    ip6_rcv_finish+0x120/0x21c net/ipv6/ip6_input.c:77
                    NF_HOOK+0x2c4/0x358 include/linux/netfilter.h:318
                    ipv6_rcv+0x9c/0xbc net/ipv6/ip6_input.c:311
                    __netif_receive_skb_one_core net/core/dev.c:6137 [inline]
                    __netif_receive_skb+0xcc/0x2a8 net/core/dev.c:6250
                    process_backlog+0x608/0x10e8 net/core/dev.c:6602
                    __napi_poll+0xb0/0x310 net/core/dev.c:7666
                    napi_poll net/core/dev.c:7729 [inline]
                    net_rx_action+0x548/0xcf0 net/core/dev.c:7881
                    handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
                    __do_softirq+0x14/0x20 kernel/softirq.c:656
                    ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68
                    call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
                    do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
                    do_softirq+0x90/0xf8 kernel/softirq.c:523
                    __local_bh_enable_ip+0x240/0x35c kernel/softirq.c:450
                    local_bh_enable+0x28/0x34 include/linux/bottom_half.h:33
                    rcu_read_unlock_bh include/linux/rcupdate.h:936 [inline]
                    __dev_queue_xmit+0x1464/0x2a68 net/core/dev.c:4844
                    dev_queue_xmit include/linux/netdevice.h:3381 [inline]
                    neigh_hh_output include/net/neighbour.h:540 [inline]
                    neigh_output include/net/neighbour.h:554 [inline]
                    ip6_finish_output2+0x1150/0x1a78 net/ipv6/ip6_output.c:136
                    __ip6_finish_output net/ipv6/ip6_output.c:-1 [inline]
                    ip6_finish_output+0x418/0x7b4 net/ipv6/ip6_output.c:220
                    NF_HOOK_COND include/linux/netfilter.h:307 [inline]
                    ip6_output+0x2c8/0x640 net/ipv6/ip6_output.c:247
                    dst_output include/net/dst.h:464 [inline]
                    NF_HOOK+0x15c/0x430 include/linux/netfilter.h:318
                    mld_sendpack+0x7fc/0x100c net/ipv6/mcast.c:1855
                    mld_send_initial_cr+0x34c/0x534 net/ipv6/mcast.c:2271
                    ipv6_mc_dad_complete+0x74/0x3a8 net/ipv6/mcast.c:2279
                    addrconf_dad_completed+0x604/0xb74 net/ipv6/addrconf.c:4340
                    addrconf_dad_work+0x928/0x10cc net/ipv6/addrconf.c:-1
                    process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
                    process_scheduled_works kernel/workqueue.c:3340 [inline]
                    worker_thread+0x958/0xed8 kernel/workqueue.c:3421
                    kthread+0x5fc/0x75c kernel/kthread.c:463
                    ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
   INITIAL USE at:
                   lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
                   __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
                   _raw_spin_lock_irq+0x58/0x70 kernel/locking/spinlock.c:170
                   spin_lock_irq include/linux/spinlock.h:376 [inline]
                   shmem_add_to_page_cache+0x564/0xa24 mm/shmem.c:904
                   shmem_alloc_and_add_folio+0x758/0x10c4 mm/shmem.c:1958
                   shmem_get_folio_gfp+0x4d4/0x159c mm/shmem.c:2556
                   shmem_read_folio_gfp+0x8c/0xf0 mm/shmem.c:5974
                   drm_gem_get_pages+0x1cc/0x7c0 drivers/gpu/drm/drm_gem.c:654
                   drm_gem_shmem_get_pages_locked+0x1d4/0x364 drivers/gpu/drm/drm_gem_shmem_helper.c:239
                   drm_gem_shmem_pin_locked+0x1f8/0x410 drivers/gpu/drm/drm_gem_shmem_helper.c:300
                   drm_gem_shmem_vmap_locked+0x3cc/0x658 drivers/gpu/drm/drm_gem_shmem_helper.c:404
                   drm_gem_shmem_object_vmap+0x28/0x38 include/drm/drm_gem_shmem_helper.h:245
                   drm_gem_vmap_locked drivers/gpu/drm/drm_gem.c:1269 [inline]
                   drm_gem_vmap+0x104/0x1d8 drivers/gpu/drm/drm_gem.c:1311
                   drm_client_buffer_vmap+0x68/0xb0 drivers/gpu/drm/drm_client.c:355
                   drm_fbdev_shmem_driver_fbdev_probe+0x1f4/0x700 drivers/gpu/drm/drm_fbdev_shmem.c:159
                   drm_fb_helper_single_fb_probe drivers/gpu/drm/drm_fb_helper.c:1562 [inline]
                   __drm_fb_helper_initial_config_and_unlock+0x108c/0x1728 drivers/gpu/drm/drm_fb_helper.c:1741
                   drm_fb_helper_initial_config+0x3c/0x58 drivers/gpu/drm/drm_fb_helper.c:1828
                   drm_fbdev_client_hotplug+0x154/0x22c drivers/gpu/drm/clients/drm_fbdev_client.c:66
                   drm_client_register+0x13c/0x1d4 drivers/gpu/drm/drm_client.c:143
                   drm_fbdev_client_setup+0x194/0x3d0 drivers/gpu/drm/clients/drm_fbdev_client.c:168
                   drm_client_setup+0x114/0x228 drivers/gpu/drm/clients/drm_client_setup.c:46
                   vkms_create+0x370/0x420 drivers/gpu/drm/vkms/vkms_drv.c:211
                   vkms_init+0x64/0x9c drivers/gpu/drm/vkms/vkms_drv.c:239
                   do_one_initcall+0x248/0x9b4 init/main.c:1378
                   do_initcall_level+0x128/0x1c4 init/main.c:1440
                   do_initcalls+0x70/0xd0 init/main.c:1456
                   do_basic_setup+0x78/0x8c init/main.c:1475
                   kernel_init_freeable+0x268/0x39c init/main.c:1688
                   kernel_init+0x24/0x1dc init/main.c:1578
                   ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
 }
 ... key      at: [<ffff800097649620>] xa_init_flags.__key+0x0/0x20

the dependencies between the lock to be acquired
 and HARDIRQ-irq-unsafe lock:
-> (&p->sequence){+.-.}-{0:0} {
   HARDIRQ-ON-W at:
                    lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
                    do_write_seqcount_begin_nested include/linux/seqlock.h:477 [inline]
                    do_write_seqcount_begin include/linux/seqlock.h:503 [inline]
                    fprop_new_period+0x3b8/0x718 lib/flex_proportions.c:74
                    writeout_period+0x94/0x11c mm/page-writeback.c:615
                    call_timer_fn+0x19c/0x814 kernel/time/timer.c:1748
                    expire_timers kernel/time/timer.c:1799 [inline]
                    __run_timers kernel/time/timer.c:2373 [inline]
                    __run_timer_base+0x51c/0x76c kernel/time/timer.c:2385
                    run_timer_base kernel/time/timer.c:2394 [inline]
                    run_timer_softirq+0x11c/0x194 kernel/time/timer.c:2405
                    handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
                    __do_softirq+0x14/0x20 kernel/softirq.c:656
                    ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68
                    call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
                    do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
                    invoke_softirq kernel/softirq.c:503 [inline]
                    __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723
                    irq_exit_rcu+0x14/0x84 kernel/softirq.c:739
                    __el1_irq arch/arm64/kernel/entry-common.c:498 [inline]
                    el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:510
                    el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
                    el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
                    __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
                    arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline]
                    __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
                    _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194
                    spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
                    unlock_task_sighand include/linux/sched/signal.h:756 [inline]
                    do_send_sig_info kernel/signal.c:1270 [inline]
                    do_send_specific+0x1cc/0x2cc kernel/signal.c:4131
                    do_tkill kernel/signal.c:4152 [inline]
                    __do_sys_tgkill kernel/signal.c:4171 [inline]
                    __se_sys_tgkill kernel/signal.c:4165 [inline]
                    __arm64_sys_tgkill+0x12c/0x188 kernel/signal.c:4165
                    __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
                    invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
                    el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
                    do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
                    el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
                    el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
                    el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
   IN-SOFTIRQ-W at:
                    lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
                    do_write_seqcount_begin_nested include/linux/seqlock.h:477 [inline]
                    do_write_seqcount_begin include/linux/seqlock.h:503 [inline]
                    fprop_new_period+0x3b8/0x718 lib/flex_proportions.c:74
                    writeout_period+0x94/0x11c mm/page-writeback.c:615
                    call_timer_fn+0x19c/0x814 kernel/time/timer.c:1748
                    expire_timers kernel/time/timer.c:1799 [inline]
                    __run_timers kernel/time/timer.c:2373 [inline]
                    __run_timer_base+0x51c/0x76c kernel/time/timer.c:2385
                    run_timer_base kernel/time/timer.c:2394 [inline]
                    run_timer_softirq+0x11c/0x194 kernel/time/timer.c:2405
                    handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
                    __do_softirq+0x14/0x20 kernel/softirq.c:656
                    ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68
                    call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
                    do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
                    invoke_softirq kernel/softirq.c:503 [inline]
                    __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723
                    irq_exit_rcu+0x14/0x84 kernel/softirq.c:739
                    __el1_irq arch/arm64/kernel/entry-common.c:498 [inline]
                    el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:510
                    el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
                    el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
                    __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
                    arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline]
                    __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
                    _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194
                    spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
                    unlock_task_sighand include/linux/sched/signal.h:756 [inline]
                    do_send_sig_info kernel/signal.c:1270 [inline]
                    do_send_specific+0x1cc/0x2cc kernel/signal.c:4131
                    do_tkill kernel/signal.c:4152 [inline]
                    __do_sys_tgkill kernel/signal.c:4171 [inline]
                    __se_sys_tgkill kernel/signal.c:4165 [inline]
                    __arm64_sys_tgkill+0x12c/0x188 kernel/signal.c:4165
                    __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
                    invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
                    el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
                    do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
                    el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
                    el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
                    el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
   INITIAL USE at:
                   lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
                   do_write_seqcount_begin_nested include/linux/seqlock.h:477 [inline]
                   do_write_seqcount_begin include/linux/seqlock.h:503 [inline]
                   fprop_new_period+0x3b8/0x718 lib/flex_proportions.c:74
                   writeout_period+0x94/0x11c mm/page-writeback.c:615
                   call_timer_fn+0x19c/0x814 kernel/time/timer.c:1748
                   expire_timers kernel/time/timer.c:1799 [inline]
                   __run_timers kernel/time/timer.c:2373 [inline]
                   __run_timer_base+0x51c/0x76c kernel/time/timer.c:2385
                   run_timer_base kernel/time/timer.c:2394 [inline]
                   run_timer_softirq+0x11c/0x194 kernel/time/timer.c:2405
                   handle_softirqs+0x31c/0xc88 kernel/softirq.c:622
                   __do_softirq+0x14/0x20 kernel/softirq.c:656
                   ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:68
                   call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:891
                   do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:73
                   invoke_softirq kernel/softirq.c:503 [inline]
                   __irq_exit_rcu+0x1b0/0x478 kernel/softirq.c:723
                   irq_exit_rcu+0x14/0x84 kernel/softirq.c:739
                   __el1_irq arch/arm64/kernel/entry-common.c:498 [inline]
                   el1_interrupt+0x40/0x60 arch/arm64/kernel/entry-common.c:510
                   el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:515
                   el1h_64_irq+0x6c/0x70 arch/arm64/kernel/entry.S:592
                   __daif_local_irq_restore arch/arm64/include/asm/irqflags.h:175 [inline]
                   arch_local_irq_restore arch/arm64/include/asm/irqflags.h:195 [inline]
                   __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
                   _raw_spin_unlock_irqrestore+0x44/0x98 kernel/locking/spinlock.c:194
                   spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
                   unlock_task_sighand include/linux/sched/signal.h:756 [inline]
                   do_send_sig_info kernel/signal.c:1270 [inline]
                   do_send_specific+0x1cc/0x2cc kernel/signal.c:4131
                   do_tkill kernel/signal.c:4152 [inline]
                   __do_sys_tgkill kernel/signal.c:4171 [inline]
                   __se_sys_tgkill kernel/signal.c:4165 [inline]
                   __arm64_sys_tgkill+0x12c/0x188 kernel/signal.c:4165
                   __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
                   invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
                   el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
                   do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
                   el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
                   el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
                   el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
   INITIAL READ USE at:
                        lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
                        seqcount_lockdep_reader_access include/linux/seqlock.h:72 [inline]
                        fprop_fraction_percpu+0xac/0x270 lib/flex_proportions.c:155
                        __wb_calc_thresh+0xfc/0x3b0 mm/page-writeback.c:913
                        wb_bg_dirty_limits mm/page-writeback.c:2130 [inline]
                        domain_over_bg_thresh+0xb8/0x1f0 mm/page-writeback.c:2144
                        wb_over_bg_thresh+0xf8/0x17c mm/page-writeback.c:2165
                        wb_check_background_flush fs/fs-writeback.c:2278 [inline]
                        wb_do_writeback fs/fs-writeback.c:2376 [inline]
                        wb_workfn+0xa30/0xdc0 fs/fs-writeback.c:2403
                        process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
                        process_scheduled_works kernel/workqueue.c:3340 [inline]
                        worker_thread+0x958/0xed8 kernel/workqueue.c:3421
                        kthread+0x5fc/0x75c kernel/kthread.c:463
                        ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
 }
 ... key      at: [<ffff800097b99300>] fprop_global_init.__key.1+0x0/0x20
 ... acquired at:
   seqcount_lockdep_reader_access include/linux/seqlock.h:72 [inline]
   fprop_fraction_percpu+0xf0/0x270 lib/flex_proportions.c:155
   __fprop_add_percpu_max+0x130/0x1f4 lib/flex_proportions.c:186
   wb_domain_writeout_add mm/page-writeback.c:562 [inline]
   __wb_writeout_add+0xbc/0x27c mm/page-writeback.c:586
   __folio_end_writeback+0x380/0x6f8 mm/page-writeback.c:2997
   folio_end_writeback_no_dropbehind+0xd0/0x204 mm/filemap.c:1661
   folio_end_writeback+0xd8/0x248 mm/filemap.c:1687
   iomap_finish_folio_write+0x1c0/0x2a4 fs/iomap/buffered-io.c:1713
   fuse_writepage_finish fs/fuse/file.c:1903 [inline]
   fuse_send_writepage fs/fuse/file.c:1954 [inline]
   fuse_flush_writepages+0x578/0x788 fs/fuse/file.c:1979
   fuse_writepages_send fs/fuse/file.c:2158 [inline]
   fuse_iomap_writeback_range+0x744/0x149c fs/fuse/file.c:2225
   iomap_writeback_range fs/iomap/buffered-io.c:1724 [inline]
   iomap_writeback_folio+0x1064/0x1fc4 fs/iomap/buffered-io.c:1842
   iomap_writepages+0x128/0x25c fs/iomap/buffered-io.c:1902
   fuse_writepages+0x208/0x2bc fs/fuse/file.c:2295
   do_writepages+0x270/0x468 mm/page-writeback.c:2598
   __writeback_single_inode+0x144/0x16b8 fs/fs-writeback.c:1737
   writeback_single_inode+0x3e4/0xc2c fs/fs-writeback.c:1858
   write_inode_now+0x13c/0x1a4 fs/fs-writeback.c:2924
   fuse_flush+0x20c/0x6a0 fs/fuse/file.c:472
   filp_flush+0xb8/0x190 fs/open.c:1533
   filp_close+0x28/0x48 fs/open.c:1546
   __range_close fs/file.c:790 [inline]
   __do_sys_close_range fs/file.c:849 [inline]
   __se_sys_close_range fs/file.c:813 [inline]
   __arm64_sys_close_range+0x318/0x5c4 fs/file.c:813
   __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
   invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
   el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
   do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
   el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
   el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
   el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596


stack backtrace:
CPU: 1 UID: 0 PID: 6846 Comm: syz.4.21 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 print_bad_irq_dependency kernel/locking/lockdep.c:2616 [inline]
 check_irq_usage kernel/locking/lockdep.c:2857 [inline]
 check_prev_add kernel/locking/lockdep.c:3169 [inline]
 check_prevs_add kernel/locking/lockdep.c:3284 [inline]
 validate_chain kernel/locking/lockdep.c:3908 [inline]
 __lock_acquire+0x3058/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x140/0x2e0 kernel/locking/lockdep.c:5868
 seqcount_lockdep_reader_access include/linux/seqlock.h:72 [inline]
 fprop_fraction_percpu+0xf0/0x270 lib/flex_proportions.c:155
 __fprop_add_percpu_max+0x130/0x1f4 lib/flex_proportions.c:186
 wb_domain_writeout_add mm/page-writeback.c:562 [inline]
 __wb_writeout_add+0xbc/0x27c mm/page-writeback.c:586
 __folio_end_writeback+0x380/0x6f8 mm/page-writeback.c:2997
 folio_end_writeback_no_dropbehind+0xd0/0x204 mm/filemap.c:1661
 folio_end_writeback+0xd8/0x248 mm/filemap.c:1687
 iomap_finish_folio_write+0x1c0/0x2a4 fs/iomap/buffered-io.c:1713
 fuse_writepage_finish fs/fuse/file.c:1903 [inline]
 fuse_send_writepage fs/fuse/file.c:1954 [inline]
 fuse_flush_writepages+0x578/0x788 fs/fuse/file.c:1979
 fuse_writepages_send fs/fuse/file.c:2158 [inline]
 fuse_iomap_writeback_range+0x744/0x149c fs/fuse/file.c:2225
 iomap_writeback_range fs/iomap/buffered-io.c:1724 [inline]
 iomap_writeback_folio+0x1064/0x1fc4 fs/iomap/buffered-io.c:1842
 iomap_writepages+0x128/0x25c fs/iomap/buffered-io.c:1902
 fuse_writepages+0x208/0x2bc fs/fuse/file.c:2295
 do_writepages+0x270/0x468 mm/page-writeback.c:2598
 __writeback_single_inode+0x144/0x16b8 fs/fs-writeback.c:1737
 writeback_single_inode+0x3e4/0xc2c fs/fs-writeback.c:1858
 write_inode_now+0x13c/0x1a4 fs/fs-writeback.c:2924
 fuse_flush+0x20c/0x6a0 fs/fuse/file.c:472
 filp_flush+0xb8/0x190 fs/open.c:1533
 filp_close+0x28/0x48 fs/open.c:1546
 __range_close fs/file.c:790 [inline]
 __do_sys_close_range fs/file.c:849 [inline]
 __se_sys_close_range fs/file.c:813 [inline]
 __arm64_sys_close_range+0x318/0x5c4 fs/file.c:813
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Crashes (13428):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/01 02:39 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f0b4cce4481 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/12/26 09:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f0b4cce4481 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/12/16 17:29 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f0b4cce4481 d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/12/12 17:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 05c93f3395ed d6526ea3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/11/04 03:41 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci dcb6fa37fd7b 686bf657 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/08 14:16 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 15:34 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4936e85c .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 04:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/01/25 02:37 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 40acda8a .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/01/11 01:53 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/01/02 08:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f0b4cce4481 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/12/08 23:47 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 05c93f3395ed d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/11/28 15:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 56b28b3bf0f5 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/11/27 05:04 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b5fb0949b675 d6526ea3 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/10/22 19:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 143937ca51cc 252fbbad .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/10/22 18:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 143937ca51cc 252fbbad .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2025/10/22 13:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 143937ca51cc 252fbbad .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/01/30 01:08 upstream 8dfce8991b95 bfa73b7b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root possible deadlock in __folio_end_writeback
2025/10/04 18:59 upstream cbf33b8e0b36 49379ee0 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root possible deadlock in __folio_end_writeback
2026/01/20 18:47 upstream 24d479d26b25 56f88057 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64 possible deadlock in __folio_end_writeback
2026/01/20 18:22 upstream 24d479d26b25 56f88057 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm64-compat possible deadlock in __folio_end_writeback
2026/02/09 09:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/09 05:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/09 04:15 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/09 03:27 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/09 01:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/09 00:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/08 21:55 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/08 21:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/08 18:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/08 13:17 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/08 11:13 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/07 21:10 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/07 21:07 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/07 06:09 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/07 03:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/07 02:56 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/07 02:55 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f20fc9f9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 23:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 19:25 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 17:56 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 16:23 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 15:01 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 14:18 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 97745f52 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 10:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 09:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 09:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 06:03 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 03:33 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 02:06 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/06 01:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 20:21 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 19:29 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 18:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 14:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 14:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 12:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 4936e85c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 08:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 08:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 07:13 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/05 02:51 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/04 20:50 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/04 20:43 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/04 19:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
2026/02/04 18:18 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 59e4d31a0470 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 possible deadlock in __folio_end_writeback
* Struck through repros no longer work on HEAD.