INFO: task syz.3.2109:6299 blocked for more than 122 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.2109      state:D stack:0     pid:6299  tgid:6298  ppid:6011   flags:0x00004004
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
 super_lock+0x150/0x300 fs/super.c:115
 super_lock_shared fs/super.c:140 [inline]
 iterate_supers+0x8a/0x560 fs/super.c:934
 ksys_sync+0x95/0x160 fs/sync.c:103
 __ia32_sys_sync+0x12/0x20 fs/sync.c:114
 x64_sys_call+0x2a58/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:163
 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: 0033:0x7fd21638f6c9
RSP: 002b:00007fd217280038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007fd2165e5fa0 RCX: 00007fd21638f6c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fd2165e5fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd2165e6038 R14: 00007fd2165e5fa0 R15: 00007ffdf4ec2818
 </TASK>
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
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: 13037 Comm: syz.5.4624 Not tainted syzkaller #0 0b5ffdee5fcd2f7749818d1ff954e9c21353764e
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:xas_retry include/linux/xarray.h:1528 [inline]
RIP: 0010:find_get_entry mm/filemap.c:2102 [inline]
RIP: 0010:find_lock_entries+0x144/0xa10 mm/filemap.c:2202
Code: 48 89 df 4c 89 e6 e8 1b 5a cf 03 49 89 c6 48 89 c7 48 c7 c6 a0 81 46 87 e8 e9 79 c9 ff 49 81 fe 02 04 00 00 0f 84 ed 00 00 00 <49> 81 fe 06 04 00 00 74 c8 4d 85 f6 0f 84 01 08 00 00 44 89 f6 83
RSP: 0018:ffffc900070d7020 EFLAGS: 00000292
RAX: 0000000000000003 RBX: ffffc900070d70a0 RCX: 0000000000000007
RDX: ffffffff81bc8a47 RSI: ffffffff874681a0 RDI: ffffea0005076840
RBP: ffffc900070d7150 R08: ffff88810af88000 R09: 0000000000000003
R10: 0000000000000406 R11: 0000000000000000 R12: fffffffffffffffe
R13: dffffc0000000000 R14: ffffea0005076840 R15: 1ffff92000e1ae40
FS:  0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6caa4e29c8 CR3: 000000014821c000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 shmem_undo_range+0x24e/0x1140 mm/shmem.c:1025
 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_general_protection+0x15a/0x1f0 arch/x86/kernel/traps.c:747
 asm_exc_general_protection+0x2b/0x30 arch/x86/include/asm/idtentry.h:617
RIP: 001f:0xe08238cefb783c15
Code: Unable to access opcode bytes at 0xe08238cefb783beb.
RSP: 002b:0000000000000000 EFLAGS: 00000202
RAX: 416a0baf45132fef RBX: fdd45069ec14bd44 RCX: 2b8c5750a0fc8ebb
RDX: 723f770df1a82f66 RSI: 1f40c422e84dc1df RDI: c5c0e279c3b490cb
RBP: 8ddbdd2c8a650dac R08: 70338a8c62fa91f5 R09: 6f548a7aa0263058
R10: 68ef037a7d871d38 R11: a50cc3da3cc49a56 R12: 2d99670775337095
R13: f80394cf3ffb2bcf R14: 73a2f64bbde01e9a R15: 9ddcc1359b405b35
 </TASK>