INFO: task syz.3.8668:26345 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.8668      state:D stack:0     pid:26345 tgid:26345 ppid:25169  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5945 [inline]
 __schedule+0x1322/0x1df0 kernel/sched/core.c:7791
 __schedule_loop kernel/sched/core.c:7872 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7887
 request_wait_answer fs/fuse/dev.c:476 [inline]
 __fuse_request_send fs/fuse/dev.c:491 [inline]
 __fuse_simple_request+0xdb1/0x1980 fs/fuse/dev.c:586
 fuse_simple_request fs/fuse/fuse_i.h:1248 [inline]
 fuse_flush+0x909/0x1d50 fs/fuse/file.c:584
 filp_flush fs/open.c:1550 [inline]
 filp_close+0xc0/0x160 fs/open.c:1563
 __range_close fs/file.c:710 [inline]
 __close_range+0x50e/0x6c0 fs/file.c:767
 __do_sys_close_range fs/open.c:1616 [inline]
 __se_sys_close_range fs/open.c:1613 [inline]
 __x64_sys_close_range+0x7e/0x90 fs/open.c:1613
 x64_sys_call+0x1686/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:437
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f0b26f8efc9
RSP: 002b:00007ffc1bb5c0a8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007f0b271e7da0 RCX: 00007f0b26f8efc9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f0b271e7da0 R08: 00000000000000e8 R09: 0000000d1bb5c39f
R10: 00007f0b271e7cb0 R11: 0000000000000246 R12: 000000000007bb7c
R13: 00007ffc1bb5c1a0 R14: ffffffffffffffff R15: 00007ffc1bb5c1c0
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 266cda178c92c5b558a82471c37c826ff232bf8e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x30 lib/dump_stack.c:94
 dump_stack_lvl+0x10c/0x190 lib/dump_stack.c:120
 dump_stack+0x19/0x20 lib/dump_stack.c:129
 nmi_cpu_backtrace+0x2bf/0x2d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x142/0x2c0 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:41
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:267 [inline]
 watchdog+0xd8f/0xed0 kernel/hung_task.c:423
 kthread+0x2ca/0x370 kernel/kthread.c:389
 ret_from_fork+0x67/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31016 Comm: syz.6.10206 Not tainted syzkaller #0 266cda178c92c5b558a82471c37c826ff232bf8e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:xa_is_internal include/linux/xarray.h:175 [inline]
RIP: 0010:xa_is_node include/linux/xarray.h:1264 [inline]
RIP: 0010:xas_load+0x71/0x3d0 lib/xarray.c:240
Code: c1 e9 03 48 89 4d 98 48 89 55 a8 48 c1 ea 03 48 89 55 b8 48 89 75 b0 48 c1 ee 03 48 89 75 c0 48 89 5d a0 45 89 fe 41 83 e6 03 <bf> 02 00 00 00 4c 89 f6 e8 e2 a6 fa fb 49 81 ff 01 10 00 00 0f 82
RSP: 0018:ffffc900055aeea0 EFLAGS: 00000002
RAX: ffffffff858b5f31 RBX: ffffc900055af052 RCX: ffff8881062e9300
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002
RBP: ffffc900055aef08 R08: ffffea0004ffa547 R09: 1ffffd40009ff4a8
R10: dffffc0000000000 R11: fffff940009ff4a9 R12: dffffc0000000000
R13: ffff88811119c000 R14: 0000000000000002 R15: ffff888110e12ec2
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f41e345cd58 CR3: 000000010b7b4000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 xas_store+0xa7/0x17e0 lib/xarray.c:790
 page_cache_delete mm/filemap.c:165 [inline]
 __filemap_remove_folio+0x272/0x410 mm/filemap.c:259
 filemap_remove_folio+0x10e/0x460 mm/filemap.c:291
 truncate_inode_folio+0x61/0x80 mm/truncate.c:182
 shmem_undo_range+0x35d/0x1140 mm/shmem.c:1039
 shmem_truncate_range mm/shmem.c:1156 [inline]
 shmem_evict_inode+0x26e/0xa00 mm/shmem.c:1284
 evict+0x4d3/0xa90 fs/inode.c:730
 iput_final fs/inode.c:1889 [inline]
 iput+0x639/0x8d0 fs/inode.c:1915
 dentry_unlink_inode+0x373/0x420 fs/dcache.c:412
 __dentry_kill+0x1b4/0x5f0 fs/dcache.c:615
 dput+0x3f2/0x510 fs/dcache.c:857
 __fput+0x596/0xa00 fs/file_table.c:437
 ____fput+0x20/0x30 fs/file_table.c:457
 task_work_run+0x1e0/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9bc/0x2630 kernel/exit.c:953
 do_group_exit+0x22a/0x300 kernel/exit.c:1095
 get_signal+0x139d/0x14f0 kernel/signal.c:2933
 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x4e/0xb0 kernel/entry/common.c:231
 irqentry_exit+0x16/0x60 kernel/entry/common.c:334
 exc_page_fault+0x66/0xc0 arch/x86/mm/fault.c:1542
 asm_exc_page_fault+0x2b/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f1bf338efd1
Code: Unable to access opcode bytes at 0x7f1bf338efa7.
RSP: 002b:fffffffffffffc70 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f1bf35e6180 RCX: 00007f1bf338efc9
RDX: 0000000000000000 RSI: fffffffffffffc70 RDI: 0000000001022000
RBP: 00007f1bf3411f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f1bf35e6218 R14: 00007f1bf35e6180 R15: 00007ffc2260c028
 </TASK>
I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev loop7, logical block 0, async page read
I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev loop7, logical block 0, async page read
I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev loop7, logical block 0, async page read
I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev loop7, logical block 0, async page read
I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev loop7, logical block 0, async page read
I/O error, dev loop7, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
Buffer I/O error on dev loop7, logical block 0, async page read