ERROR: (device loop0): txBegin: read-only filesystem
ERROR: (device loop0): remounting filesystem as read-only
jfs_dirty_inode called on read-only volume
Is remount racy?
find_entry called with index = 0
find_entry called with index = 0
find_entry called with index = 0
find_entry called with index = 0
find_entry called with index = 0
jfs_dirty_inode called on read-only volume
Is remount racy?
jfs_dirty_inode called on read-only volume
Is remount racy?
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: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #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
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
assign_lock_key+0x133/0x150 kernel/locking/lockdep.c:987
register_lock_class+0x105/0x320 kernel/locking/lockdep.c:1302
__lock_acquire+0x99/0xd20 kernel/locking/lockdep.c:5115
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5871
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
__wake_up_common_lock+0x2f/0x1f0 kernel/sched/wait.c:105
txEnd+0x8a/0x530 fs/jfs/jfs_txnmgr.c:504
jfs_create+0x33e/0xa80 fs/jfs/namei.c:159
lookup_open fs/namei.c:3717 [inline]
open_last_lookups fs/namei.c:3816 [inline]
path_openat+0x14f1/0x3830 fs/namei.c:4052
do_filp_open+0x1fa/0x410 fs/namei.c:4082
file_open_name fs/open.c:1381 [inline]
filp_open+0x176/0x1d0 fs/open.c:1401
do_coredump+0x1bd3/0x3440 fs/coredump.c:754
get_signal+0x1109/0x1340 kernel/signal.c:3019
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
ret_from_fork+0x47f/0x770 arch/x86/kernel/process.c:157
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted 6.16.0-rc3-syzkaller-00044-g7595b66ae9de #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:__wake_up_common kernel/sched/wait.c:85 [inline]
RIP: 0010:__wake_up_common_lock+0xd3/0x1f0 kernel/sched/wait.c:106
Code: fd 0f 84 d1 00 00 00 8b 6c 24 04 eb 13 48 ba 00 00 00 00 00 fc ff df 4d 39 fd 0f 84 b8 00 00 00 4d 89 ee 4c 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 0f 65 88 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc9000d4aef00 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000002 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000d4aede0
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001a95dbc R12: ffff88804445b608
R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90001369070
FS: 00007ff45e3806c0(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff45e37f6c0 CR3: 0000000011876000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
txEnd+0x8a/0x530 fs/jfs/jfs_txnmgr.c:504
jfs_create+0x33e/0xa80 fs/jfs/namei.c:159
lookup_open fs/namei.c:3717 [inline]
open_last_lookups fs/namei.c:3816 [inline]
path_openat+0x14f1/0x3830 fs/namei.c:4052
do_filp_open+0x1fa/0x410 fs/namei.c:4082
file_open_name fs/open.c:1381 [inline]
filp_open+0x176/0x1d0 fs/open.c:1401
do_coredump+0x1bd3/0x3440 fs/coredump.c:754
get_signal+0x1109/0x1340 kernel/signal.c:3019
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:111
exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:414 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:449 [inline]
ret_from_fork+0x47f/0x770 arch/x86/kernel/process.c:157
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__wake_up_common kernel/sched/wait.c:85 [inline]
RIP: 0010:__wake_up_common_lock+0xd3/0x1f0 kernel/sched/wait.c:106
Code: fd 0f 84 d1 00 00 00 8b 6c 24 04 eb 13 48 ba 00 00 00 00 00 fc ff df 4d 39 fd 0f 84 b8 00 00 00 4d 89 ee 4c 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 0f 65 88 00 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc9000d4aef00 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000002 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffc9000d4aede0
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001a95dbc R12: ffff88804445b608
R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90001369070
FS: 00007ff45e3806c0(0000) GS:ffff88808d251000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff45e37f6c0 CR3: 0000000011876000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: fd std
1: 0f 84 d1 00 00 00 je 0xd8
7: 8b 6c 24 04 mov 0x4(%rsp),%ebp
b: eb 13 jmp 0x20
d: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
14: fc ff df
17: 4d 39 fd cmp %r15,%r13
1a: 0f 84 b8 00 00 00 je 0xd8
20: 4d 89 ee mov %r13,%r14
23: 4c 89 e8 mov %r13,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction
2e: 74 12 je 0x42
30: 4c 89 f7 mov %r14,%rdi
33: e8 0f 65 88 00 call 0x886547
38: 48 rex.W
39: ba 00 00 00 00 mov $0x0,%edx
3e: 00 fc add %bh,%ah