syzbot


WARNING in __list_lru_init

Status: upstream: reported C repro on 2023/02/09 01:49
Subsystems: fat
[Documentation on labels]
Reported-by: syzbot+f13eed984eb1c0bfc9db@syzkaller.appspotmail.com
First crash: 502d, last: 502d

Sample crash report:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
------------[ cut here ]------------
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0x10a/0x149 lib/fault-inject.c:149
WARNING: CPU: 1 PID: 8133 at fs/super.c:1163 kill_block_super+0xbe/0xe0 fs/super.c:1163
 should_failslab+0xd6/0x130 mm/failslab.c:32
Kernel panic - not syncing: kernel: panic_on_warn set ...

 slab_pre_alloc_hook mm/slab.h:421 [inline]
 slab_alloc mm/slab.c:3376 [inline]
 __do_kmalloc mm/slab.c:3718 [inline]
 __kmalloc+0x2c1/0x400 mm/slab.c:3729
 kmalloc include/linux/slab.h:493 [inline]
 kzalloc include/linux/slab.h:661 [inline]
 __list_lru_init+0x67/0x710 mm/list_lru.c:539
 alloc_super fs/super.c:229 [inline]
 sget_userns+0x4e4/0xc10 fs/super.c:516
 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: 0033:0x7fcbff06821a
RSP: 002b:00007ffff1344938 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcbff06821a
RDX: 0000000020000240 RSI: 0000000020000280 RDI: 00007ffff1344950
RBP: 00007ffff1344950 R08: 00007ffff1344990 R09: 0000000000000228
R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000005
R13: 00005555567b42c0 R14: 0000000000000000 R15: 00007ffff1344990
CPU: 1 PID: 8133 Comm: syz-executor313 Not tainted 4.14.305-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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:ffff88809c6f7bc8 EFLAGS: 00010297
RAX: ffff8880aefd4080 RBX: 0000000000000000 RCX: 1ffff11015dfa926
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880902e6d30
RBP: ffff88809420e3c0 R08: ffffffff8b9c15a0 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880aefd4080 R12: ffff8880902e6880
R13: ffffffff890aee50 R14: ffffffff88f46340 R15: dffffc0000000000
 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: 0033:0x7fcbff06821a
RSP: 002b:00007ffff1344938 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fcbff06821a
RDX: 0000000020000240 RSI: 0000000020000280 RDI: 00007ffff1344950
RBP: 00007ffff1344950 R08: 00007ffff1344990 R09: 0000000000000228
R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000005
R13: 00005555567b42c0 R14: 0000000000000000 R15: 00007ffff1344990
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/09 01:49 linux-4.14.y a8ad60f2af58 fc9c934e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-4-14 WARNING in __list_lru_init
* Struck through repros no longer work on HEAD.