------------[ cut here ]------------
WARNING: CPU: 1 PID: 12122 at mm/shmem.c:1383 shmem_evict_inode+0x8ee/0xbe0 mm/shmem.c:1383
Modules linked in:
CPU: 1 UID: 0 PID: 12122 Comm: syz.4.1677 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:shmem_evict_inode+0x8ee/0xbe0 mm/shmem.c:1383
Code: fe e8 06 eb bc ff 45 85 ff 75 ac e8 bc ef bc ff 48 8b 74 24 28 48 8b 7c 24 30 e8 ed 12 95 ff e9 e5 fd ff ff e8 a3 ef bc ff 90 <0f> 0b 90 e9 51 f9 ff ff e8 95 ef bc ff 4c 89 e2 48 b8 00 00 00 00
RSP: 0018:ffffc900040c7770 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88806a2e9b60 RCX: ffffffff81ff76fe
RDX: ffff8880216c2480 RSI: ffffffff81ff7dad RDI: 0000000000000007
RBP: ffffc900040c7898 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000001 R12: 0000000000000008
R13: 0000000000000000 R14: ffff88806a2e9b90 R15: ffff88806a2e9a50
FS:  0000000000000000(0000) GS:ffff888097910000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f71260d1 CR3: 000000000e182000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 evict+0x3e6/0x920 fs/inode.c:810
 iput_final fs/inode.c:1914 [inline]
 iput.part.0+0x6a9/0xb00 fs/inode.c:1966
 iput+0x35/0x40 fs/inode.c:1929
 dentry_unlink_inode+0x29c/0x480 fs/dcache.c:466
 __dentry_kill+0x1d0/0x600 fs/dcache.c:669
 dput.part.0+0x4b1/0x9b0 fs/dcache.c:911
 dput+0x1f/0x30 fs/dcache.c:901
 __fput+0x51c/0xb70 fs/file_table.c:476
 task_work_run+0x150/0x240 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x86f/0x2bf0 kernel/exit.c:966
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1107
 get_signal+0x2671/0x26d0 kernel/signal.c:3034
 arch_do_signal_or_restart+0x8f/0x790 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop+0x85/0x130 kernel/entry/common.c:40
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 __do_fast_syscall_32+0x240/0x300 arch/x86/entry/syscall_32.c:309
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf70ed579
Code: Unable to access opcode bytes at 0xf70ed54f.
RSP: 002b:00000000f549b60c EFLAGS: 00000296 ORIG_RAX: 00000000000000f0
RAX: fffffffffffffe00 RBX: 00000000f74b50b8 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f74b50bc
RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>