./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3068784224

<...>
Warning: Permanently added '10.128.1.23' (ED25519) to the list of known hosts.
execve("./syz-executor3068784224", ["./syz-executor3068784224"], 0x7ffc21022dc0 /* 10 vars */) = 0
brk(NULL)                               = 0x55557e057000
brk(0x55557e057d00)                     = 0x55557e057d00
arch_prctl(ARCH_SET_FS, 0x55557e057380) = 0
set_tid_address(0x55557e057650)         = 5839
set_robust_list(0x55557e057660, 24)     = 0
rseq(0x55557e057ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3068784224", 4096) = 28
getrandom("\x2d\x85\xa4\x5b\xcf\x12\xcb\x9d", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x55557e057d00
brk(0x55557e078d00)                     = 0x55557e078d00
brk(0x55557e079000)                     = 0x55557e079000
mprotect(0x7efe03946000, 16384, PROT_READ) = 0
mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000
mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000
mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached
, child_tidptr=0x55557e057650) = 5840
[pid  5840] set_robust_list(0x55557e057660, 24) = 0
[pid  5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5840] getppid()                   = 0
[pid  5840] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid  5840] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid  5840] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid  5840] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid  5840] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid  5840] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid  5840] unshare(CLONE_NEWNS)        = 0
[pid  5840] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid  5840] unshare(CLONE_NEWIPC)       = 0
[pid  5840] unshare(CLONE_NEWCGROUP)    = 0
[pid  5840] unshare(CLONE_NEWUTS)       = 0
[pid  5840] unshare(CLONE_SYSVSEM)      = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "16777216", 8)     = 8
[pid  5840] close(3)                    = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "536870912", 9)    = 9
[pid  5840] close(3)                    = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "1024", 4)         = 4
[pid  5840] close(3)                    = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "8192", 4)         = 4
[pid  5840] close(3)                    = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "1024", 4)         = 4
[pid  5840] close(3)                    = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "1024", 4)         = 4
[pid  5840] close(3)                    = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "1024 1048576 500 1024", 21) = 21
[pid  5840] close(3)                    = 0
[pid  5840] getpid()                    = 1
[pid  5840] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5840] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5840] unshare(CLONE_NEWNET)       = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "0 65535", 7)      = 7
[pid  5840] close(3)                    = 0
[pid  5840] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3
[pid  5840] write(3, "100000", 6)       = 6
[pid  5840] close(3)                    = 0
[pid  5840] mkdir("./syz-tmp", 0777)    = 0
[pid  5840] mount("", "./syz-tmp", "tmpfs", 0, NULL) = 0
[pid  5840] mkdir("./syz-tmp/newroot", 0777) = 0
[pid  5840] mkdir("./syz-tmp/newroot/dev", 0700) = 0
[pid  5840] mount("/dev", "./syz-tmp/newroot/dev", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5840] mkdir("./syz-tmp/newroot/proc", 0700) = 0
[pid  5840] mount("syz-proc", "./syz-tmp/newroot/proc", "proc", 0, NULL) = 0
[pid  5840] mkdir("./syz-tmp/newroot/selinux", 0700) = 0
[pid  5840] mount("/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid  5840] mount("/sys/fs/selinux", "./syz-tmp/newroot/selinux", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid  5840] mkdir("./syz-tmp/newroot/sys", 0700) = 0
[pid  5840] mount("/sys", "./syz-tmp/newroot/sys", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5840] mount("/sys/kernel/debug", "./syz-tmp/newroot/sys/kernel/debug", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5840] mount("/sys/fs/smackfs", "./syz-tmp/newroot/sys/fs/smackfs", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid  5840] mount("/proc/sys/fs/binfmt_misc", "./syz-tmp/newroot/proc/sys/fs/binfmt_misc", NULL, MS_BIND|MS_REC|MS_PRIVATE, NULL) = 0
[pid  5840] mkdir("./syz-tmp/newroot/syz-inputs", 0700) = 0
[pid  5840] mount("/syz-inputs", "./syz-tmp/newroot/syz-inputs", NULL, MS_RDONLY|MS_BIND|MS_REC|MS_PRIVATE, NULL) = -1 ENOENT (No such file or directory)
[pid  5840] mkdir("./syz-tmp/pivot", 0777) = 0
[pid  5840] pivot_root("./syz-tmp", "./syz-tmp/pivot") = 0
[pid  5840] chdir("/")                  = 0
[pid  5840] umount2("./pivot", MNT_DETACH) = 0
[pid  5840] chroot("./newroot")         = 0
[pid  5840] chdir("/")                  = 0
[pid  5840] mkdir("/dev/gadgetfs", 0777) = 0
[pid  5840] mount("gadgetfs", "/dev/gadgetfs", "gadgetfs", 0, NULL) = 0
[pid  5840] mkdir("/dev/binderfs", 0777) = 0
[pid  5840] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid  5840] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5840] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
executing program
[pid  5840] write(1, "executing program\n", 18) = 18
[pid  5840] memfd_create("syzkaller", 0) = 3
[pid  5840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efdfb400000
[pid  5840] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5840] munmap(0x7efdfb400000, 138412032) = 0
[pid  5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5840] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5840] close(3)                    = 0
[pid  5840] close(4)                    = 0
[pid  5840] mkdir("./file1", 0777)      = 0
[   89.734799][ T5840] loop0: detected capacity change from 0 to 32768
[   89.804416][ T5840] bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,promote_target=invalid device 15,journal_flush_disabled,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc,no_data_io
[   89.804416][ T5840]   allowing incompatible features above 0.0: (unknown version)
[   89.804416][ T5840]   features: lz4,new_siphash,inline_data,new_extent_overwrite,btree_ptr_v2,new_varint,journal_no_flush,alloc_v2,extents_across_btree_nodes
[   89.849948][ T5840] bcachefs (loop0): Using encoding defined by superblock: utf8-12.1.0
[   89.858855][ T5840] bcachefs (loop0): recovering from clean shutdown, journal seq 10
[   89.866970][ T5840] bcachefs (loop0): Version upgrade required:
[   89.866970][ T5840] Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete
[   89.866970][ T5840] Doing incompatible version upgrade from 0.24: unwritten_extents to 1.28: inode_has_case_insensitive
[pid  5840] mount("/dev/loop0", "./file1", "bcachefs", MS_I_VERSION, "acl,direct_io,norecovery,fsck,journal_flush_disabled,noreTovery,btree_node_mem_ptr_optimization,reco"...) = 0
[   89.866970][ T5840]   running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,check_rebalance_work,set_fs_needs_rebalance
[   89.941114][ T5840] bcachefs (loop0): dropping and reconstructing all alloc info
[pid  5840] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3
[pid  5840] chdir("./file1")            = 0
[pid  5840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5840] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5840] close(4)                    = 0
[   89.971818][ T5840] bcachefs (loop0): accounting_read... done
[   89.978801][ T5840] bcachefs (loop0): alloc_read... done
[   89.984761][ T5840] bcachefs (loop0): snapshots_read... done
[   89.991538][ T5840] bcachefs (loop0): done starting filesystem
[pid  5840] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NOCTTY|O_NOATIME|FASYNC, 0100) = 4
[pid  5840] pwritev2(4, [{iov_base="\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x62\x63\x61\x63\x68\x65\x66\x73\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=44027}], 1, 21509, 0) = 44027
[pid  5840] exit_group(1)               = ?
[   90.124339][   T12] ------------[ cut here ]------------
[   90.130192][   T12] WARNING: CPU: 0 PID: 12 at block/bio.c:513 bio_alloc_bioset+0xd45/0x1110
[   90.138945][   T12] Modules linked in:
[   90.142983][   T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-next-20250606-syzkaller #0 PREEMPT(full) 
[   90.154196][   T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[   90.165292][   T12] Workqueue: writeback wb_workfn (flush-bcachefs-1)
[   90.172602][   T12] RIP: 0010:bio_alloc_bioset+0xd45/0x1110
[   90.178839][   T12] Code: db f6 ff 81 ce 00 20 09 00 e8 57 87 79 fd 48 85 c0 0f 84 8b 00 00 00 49 89 c7 e8 96 02 21 fd e9 65 f8 ff ff e8 8c 02 21 fd 90 <0f> 0b 90 e9 41 fb ff ff e8 7e 02 21 fd 90 0f 0b 90 e9 04 fb ff ff
[   90.198925][   T12] RSP: 0018:ffffc90000116f60 EFLAGS: 00010293
[   90.205373][   T12] RAX: ffffffff849f5c54 RBX: 0000000000000000 RCX: ffff88801d2d5a00
[   90.213693][   T12] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000
[   90.222034][   T12] RBP: dffffc0000000000 R08: ffff8880708c8948 R09: 1ffffd40003fa530
[   90.230354][   T12] R10: dffffc0000000000 R11: fffff940003fa531 R12: 0000000000000001
[   90.238437][   T12] R13: ffff8880708c8948 R14: ffff8880708c8a60 R15: 0000000000000100
[   90.246440][   T12] FS:  0000000000000000(0000) GS:ffff888125c4d000(0000) knlGS:0000000000000000
[   90.255440][   T12] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   90.262105][   T12] CR2: 00007efe03915138 CR3: 00000000736c0000 CR4: 00000000003526f0
[   90.270267][   T12] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   90.278349][   T12] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   90.286453][   T12] Call Trace:
[   90.289799][   T12]  <TASK>
[   90.292764][   T12]  ? folio_unlock+0x101/0x160
[   90.297451][   T12]  __bch2_writepage+0x1581/0x2790
[   90.302592][   T12]  ? __pfx___bch2_writepage+0x10/0x10
[   90.307999][   T12]  write_cache_pages+0x61/0x100
[   90.312931][   T12]  bch2_writepages+0xf9/0x2d0
[   90.317656][   T12]  ? __pfx_bch2_writepages+0x10/0x10
[   90.323069][   T12]  do_writepages+0x32b/0x550
[   90.327746][   T12]  ? reacquire_held_locks+0x127/0x1d0
[   90.333252][   T12]  ? writeback_sb_inodes+0x372/0x1000
[   90.338739][   T12]  __writeback_single_inode+0x145/0xff0
[   90.344309][   T12]  ? do_raw_spin_unlock+0x122/0x240
[   90.349586][   T12]  writeback_sb_inodes+0x6b5/0x1000
[   90.354845][   T12]  ? __pfx_writeback_sb_inodes+0x10/0x10
[   90.360623][   T12]  ? rcu_is_watching+0x15/0xb0
[   90.365433][   T12]  wb_writeback+0x43b/0xaf0
[   90.370115][   T12]  ? queue_io+0x391/0x590
[   90.374485][   T12]  ? __pfx_wb_writeback+0x10/0x10
[   90.379599][   T12]  ? _raw_spin_unlock_irq+0x23/0x50
[   90.384854][   T12]  wb_workfn+0x409/0xef0
[   90.389209][   T12]  ? __pfx_wb_workfn+0x10/0x10
[   90.394006][   T12]  ? __lock_acquire+0xab9/0xd20
[   90.398948][   T12]  ? process_scheduled_works+0x9ef/0x17b0
[   90.404706][   T12]  ? _raw_spin_unlock_irq+0x23/0x50
[   90.409987][   T12]  ? process_scheduled_works+0x9ef/0x17b0
[   90.415752][   T12]  ? process_scheduled_works+0x9ef/0x17b0
[   90.421573][   T12]  process_scheduled_works+0xae1/0x17b0
[   90.427198][   T12]  ? __pfx_process_scheduled_works+0x10/0x10
[   90.433382][   T12]  worker_thread+0x8a0/0xda0
[   90.438028][   T12]  kthread+0x70e/0x8a0
[   90.442373][   T12]  ? __pfx_worker_thread+0x10/0x10
[   90.447531][   T12]  ? __pfx_kthread+0x10/0x10
[   90.452199][   T12]  ? _raw_spin_unlock_irq+0x23/0x50
[   90.457444][   T12]  ? lockdep_hardirqs_on+0x9c/0x150
[   90.462838][   T12]  ? __pfx_kthread+0x10/0x10
[   90.467481][   T12]  ret_from_fork+0x3f9/0x770
[   90.472200][   T12]  ? __pfx_ret_from_fork+0x10/0x10
[   90.477373][   T12]  ? __switch_to_asm+0x39/0x70
[   90.482248][   T12]  ? __switch_to_asm+0x33/0x70
[   90.487050][   T12]  ? __pfx_kthread+0x10/0x10
[   90.491736][   T12]  ret_from_fork_asm+0x1a/0x30
[   90.496573][   T12]  </TASK>
[   90.499725][   T12] Kernel panic - not syncing: kernel: panic_on_warn set ...
[   90.507032][   T12] CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted 6.15.0-next-20250606-syzkaller #0 PREEMPT(full) 
[   90.518142][   T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[   90.528199][   T12] Workqueue: writeback wb_workfn (flush-bcachefs-1)
[   90.534849][   T12] Call Trace:
[   90.538140][   T12]  <TASK>
[   90.541075][   T12]  dump_stack_lvl+0x99/0x250
[   90.545674][   T12]  ? __asan_memcpy+0x40/0x70
[   90.550278][   T12]  ? __pfx_dump_stack_lvl+0x10/0x10
[   90.555484][   T12]  ? __pfx__printk+0x10/0x10
[   90.560103][   T12]  panic+0x2db/0x790
[   90.564045][   T12]  ? __pfx_panic+0x10/0x10
[   90.568493][   T12]  ? show_trace_log_lvl+0x4fb/0x550
[   90.573805][   T12]  ? ret_from_fork_asm+0x1a/0x30
[   90.578751][   T12]  __warn+0x31b/0x4b0
[   90.582743][   T12]  ? bio_alloc_bioset+0xd45/0x1110
[   90.587864][   T12]  ? bio_alloc_bioset+0xd45/0x1110
[   90.593074][   T12]  report_bug+0x2be/0x4f0
[   90.597409][   T12]  ? bio_alloc_bioset+0xd45/0x1110
[   90.602534][   T12]  ? bio_alloc_bioset+0xd45/0x1110
[   90.607652][   T12]  ? bio_alloc_bioset+0xd47/0x1110
[   90.612781][   T12]  handle_bug+0x84/0x160
[   90.617043][   T12]  exc_invalid_op+0x1a/0x50
[   90.621560][   T12]  asm_exc_invalid_op+0x1a/0x20
[   90.626421][   T12] RIP: 0010:bio_alloc_bioset+0xd45/0x1110
[   90.632226][   T12] Code: db f6 ff 81 ce 00 20 09 00 e8 57 87 79 fd 48 85 c0 0f 84 8b 00 00 00 49 89 c7 e8 96 02 21 fd e9 65 f8 ff ff e8 8c 02 21 fd 90 <0f> 0b 90 e9 41 fb ff ff e8 7e 02 21 fd 90 0f 0b 90 e9 04 fb ff ff
[   90.651842][   T12] RSP: 0018:ffffc90000116f60 EFLAGS: 00010293
[   90.657922][   T12] RAX: ffffffff849f5c54 RBX: 0000000000000000 RCX: ffff88801d2d5a00
[   90.665892][   T12] RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000
[   90.673872][   T12] RBP: dffffc0000000000 R08: ffff8880708c8948 R09: 1ffffd40003fa530
[   90.681846][   T12] R10: dffffc0000000000 R11: fffff940003fa531 R12: 0000000000000001
[   90.689825][   T12] R13: ffff8880708c8948 R14: ffff8880708c8a60 R15: 0000000000000100
[   90.697813][   T12]  ? bio_alloc_bioset+0xd44/0x1110
[   90.702953][   T12]  ? folio_unlock+0x101/0x160
[   90.707638][   T12]  __bch2_writepage+0x1581/0x2790
[   90.712726][   T12]  ? __pfx___bch2_writepage+0x10/0x10
[   90.718114][   T12]  write_cache_pages+0x61/0x100
[   90.722989][   T12]  bch2_writepages+0xf9/0x2d0
[   90.727683][   T12]  ? __pfx_bch2_writepages+0x10/0x10
[   90.732980][   T12]  do_writepages+0x32b/0x550
[   90.737596][   T12]  ? reacquire_held_locks+0x127/0x1d0
[   90.742981][   T12]  ? writeback_sb_inodes+0x372/0x1000
[   90.748381][   T12]  __writeback_single_inode+0x145/0xff0
[   90.753933][   T12]  ? do_raw_spin_unlock+0x122/0x240
[   90.759144][   T12]  writeback_sb_inodes+0x6b5/0x1000
[   90.764417][   T12]  ? __pfx_writeback_sb_inodes+0x10/0x10
[   90.770099][   T12]  ? rcu_is_watching+0x15/0xb0
[   90.774890][   T12]  wb_writeback+0x43b/0xaf0
[   90.779429][   T12]  ? queue_io+0x391/0x590
[   90.783783][   T12]  ? __pfx_wb_writeback+0x10/0x10
[   90.788824][   T12]  ? _raw_spin_unlock_irq+0x23/0x50
[   90.794058][   T12]  wb_workfn+0x409/0xef0
[   90.798324][   T12]  ? __pfx_wb_workfn+0x10/0x10
[   90.803120][   T12]  ? __lock_acquire+0xab9/0xd20
[   90.807989][   T12]  ? process_scheduled_works+0x9ef/0x17b0
[   90.813723][   T12]  ? _raw_spin_unlock_irq+0x23/0x50
[   90.818932][   T12]  ? process_scheduled_works+0x9ef/0x17b0
[   90.824660][   T12]  ? process_scheduled_works+0x9ef/0x17b0
[   90.830397][   T12]  process_scheduled_works+0xae1/0x17b0
[   90.835991][   T12]  ? __pfx_process_scheduled_works+0x10/0x10
[   90.841999][   T12]  worker_thread+0x8a0/0xda0
[   90.846613][   T12]  kthread+0x70e/0x8a0
[   90.850698][   T12]  ? __pfx_worker_thread+0x10/0x10
[   90.855816][   T12]  ? __pfx_kthread+0x10/0x10
[   90.860423][   T12]  ? _raw_spin_unlock_irq+0x23/0x50
[   90.865670][   T12]  ? lockdep_hardirqs_on+0x9c/0x150
[   90.870908][   T12]  ? __pfx_kthread+0x10/0x10
[   90.875519][   T12]  ret_from_fork+0x3f9/0x770
[   90.880132][   T12]  ? __pfx_ret_from_fork+0x10/0x10
[   90.885266][   T12]  ? __switch_to_asm+0x39/0x70
[   90.890044][   T12]  ? __switch_to_asm+0x33/0x70
[   90.894814][   T12]  ? __pfx_kthread+0x10/0x10
[   90.899439][   T12]  ret_from_fork_asm+0x1a/0x30
[   90.904243][   T12]  </TASK>
[   90.907599][   T12] Kernel Offset: disabled
[   90.911938][   T12] Rebooting in 86400 seconds..