INFO: trying to register non-static key in shmem_add_to_page_cache

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 3c8c2309 Linux 4.19.190
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=171bad69d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=d3c2572d41264a3d
dashboard link: https://syzkaller.appspot.com/bug?extid=2e9a9b04e7809d0e9cf7

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+2e9a9b...@syzkaller.appspotmail.com

INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 1 PID: 1621 Comm: systemd-udevd Not tainted 4.19.190-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
assign_lock_key kernel/locking/lockdep.c:728 [inline]
register_lock_class+0xe82/0x11c0 kernel/locking/lockdep.c:754
__lock_acquire+0x17d/0x3ff0 kernel/locking/lockdep.c:3304
lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x5b/0x80 kernel/locking/spinlock.c:160
spin_lock_irq include/linux/spinlock.h:354 [inline]
shmem_add_to_page_cache+0x306/0xbb0 mm/shmem.c:607
shmem_getpage_gfp+0x2004/0x37f0 mm/shmem.c:1836
netlink: 20 bytes leftover after parsing attributes in process `syz-executor.5'.
shmem_getpage mm/shmem.c:132 [inline]
shmem_write_begin+0xff/0x1e0 mm/shmem.c:2436
generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170
__generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295
generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323
call_write_iter include/linux/fs.h:1821 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x51b/0x770 fs/read_write.c:487
vfs_write+0x1f3/0x540 fs/read_write.c:549
ksys_write+0x12b/0x2a0 fs/read_write.c:599
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ffa4c671970
Code: 73 01 c3 48 8b 0d 28 d5 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 99 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e 9b 01 00 48 89 04 24
RSP: 002b:00007ffd8d549c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000000003f RCX: 00007ffa4c671970
RDX: 000000000000003f RSI: 000055ec473592d0 RDI: 000000000000000f
RBP: 000055ec473592d0 R08: 000055ec47340840 R09: 00007ffa4d7ff8c0
R10: 0000000000000073 R11: 0000000000000246 R12: 000000000000003f
R13: 0000000000000001 R14: 000055ec47340760 R15: 000000000000003f
__ntfs_error: 122 callbacks suppressed
ntfs: (device loop3): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: (device loop3): read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting without trying to recover.
ntfs: (device loop3): ntfs_fill_super(): Not an NTFS volume.
ntfs: (device loop3): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: (device loop3): read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting without trying to recover.
ntfs: (device loop3): ntfs_fill_super(): Not an NTFS volume.
ntfs: (device loop1): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: (device loop1): read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting without trying to recover.
ntfs: (device loop1): ntfs_fill_super(): Not an NTFS volume.
ntfs: (device loop4): read_ntfs_boot_sector(): Primary boot sector is invalid.
print_req_error: 162 callbacks suppressed
print_req_error: I/O error, dev loop7, sector 992
print_req_error: I/O error, dev loop7, sector 0
print_req_error: I/O error, dev loop7, sector 4
buffer_io_error: 154 callbacks suppressed
Buffer I/O error on dev loop7, logical block 0, lost async page write
print_req_error: I/O error, dev loop7, sector 8
Buffer I/O error on dev loop7, logical block 2, lost async page write
print_req_error: I/O error, dev loop7, sector 12
Buffer I/O error on dev loop7, logical block 3, lost async page write
print_req_error: I/O error, dev loop7, sector 16
Buffer I/O error on dev loop7, logical block 4, lost async page write
print_req_error: I/O error, dev loop7, sector 20
Buffer I/O error on dev loop7, logical block 5, lost async page write
print_req_error: I/O error, dev loop7, sector 24
Buffer I/O error on dev loop7, logical block 6, lost async page write
print_req_error: I/O error, dev loop7, sector 28
Buffer I/O error on dev loop7, logical block 7, lost async page write
print_req_error: I/O error, dev loop7, sector 32
Buffer I/O error on dev loop7, logical block 8, lost async page write
Buffer I/O error on dev loop7, logical block 9, lost async page write
Buffer I/O error on dev loop7, logical block 10, lost async page write
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
__ntfs_error: 140 callbacks suppressed
ntfs: (device loop3): read_ntfs_boot_sector(): Primary boot sector is invalid.
netlink: 4 bytes leftover after parsing attributes in process `syz-executor.2'.
ntfs: (device loop1): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: (device loop3): read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting without trying to recover.
ntfs: (device loop3): ntfs_fill_super(): Not an NTFS volume.
ntfs: (device loop1): read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting without trying to recover.
ntfs: (device loop1): ntfs_fill_super(): Not an NTFS volume.
ntfs: (device loop4): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: (device loop3): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: (device loop4): read_ntfs_boot_sector(): Mount option errors=recover not used. Aborting without trying to recover.
ntfs: (device loop1): read_ntfs_boot_sector(): Primary boot sector is invalid.
ntfs: volume version 3.1.


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[syzbot]

Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.