shmem_alloc_page+0xe0/0x180 mm/shmem.c:1480
 shmem_alloc_and_acct_page+0x126/0x620 mm/shmem.c:1505
 shmem_getpage_gfp+0x302/0x2a40 mm/shmem.c:1782
------------[ cut here ]------------
WARNING: CPU: 0 PID: 13201 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163
Kernel panic - not syncing: kernel: panic_on_warn set ...

 shmem_getpage mm/shmem.c:131 [inline]
 shmem_write_begin+0xeb/0x190 mm/shmem.c:2431
 generic_perform_write+0x1d5/0x430 mm/filemap.c:3055
 __generic_file_write_iter+0x227/0x590 mm/filemap.c:3180
 generic_file_write_iter+0x36f/0x650 mm/filemap.c:3208
 call_write_iter include/linux/fs.h:1780 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f79a4fc4e7f
RSP: 002b:00007f79a3584f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f79a4fc4e7f
RDX: 0000000000080000 RSI: 00007f799b165000 RDI: 0000000000000004
RBP: 00007f799b165000 R08: 0000000000000000 R09: 000000000000054f
R10: 0000000000080000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f79a3584fdc R14: 00007f79a3584fe0 R15: 0000000020000642
CPU: 0 PID: 13201 Comm: syz-executor.0 Not tainted 4.14.307-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 panic+0x21d/0x451 kernel/panic.c:247
 check_panic_on_warn.cold+0x19/0x35 kernel/panic.c:171
 __warn+0xdf/0x1e0 kernel/panic.c:603
 report_bug+0x208/0x250 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967
RIP: 0010:kill_block_super+0xbe/0xe0 fs/super.c:1163
RSP: 0018:ffff8880570bfbb0 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90005cec000
RDX: 0000000000040000 RSI: ffffffff81877b4e RDI: ffff8880b1d68af0
RBP: ffff88809de1a380 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88805bb443c0 R12: ffff8880b1d68640
R13: ffffffff891bc830 R14: ffffffff88f46340 R15: dffffc0000000000
 efs_kill_sb+0x38/0x50 fs/efs/super.c:33
 deactivate_locked_super+0x6c/0xd0 fs/super.c:319
 sget_userns+0x9c4/0xc10 fs/super.c:537
 sget+0xd1/0x110 fs/super.c:572
 mount_bdev+0xcd/0x360 fs/super.c:1107
 mount_fs+0x92/0x2a0 fs/super.c:1237
 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046
 vfs_kern_mount fs/namespace.c:1036 [inline]
 do_new_mount fs/namespace.c:2572 [inline]
 do_mount+0xe65/0x2a30 fs/namespace.c:2905
 SYSC_mount fs/namespace.c:3121 [inline]
 SyS_mount+0xa8/0x120 fs/namespace.c:3098
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7fabc281c62a
RSP: 002b:00007fabc0d8cf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000000036a RCX: 00007fabc281c62a
RDX: 0000000020000380 RSI: 00000000200003c0 RDI: 00007fabc0d8cfe0
RBP: 00007fabc0d8d020 R08: 00007fabc0d8d020 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000380
R13: 00000000200003c0 R14: 00007fabc0d8cfe0 R15: 0000000020000400
Kernel Offset: disabled
Rebooting in 86400 seconds..