sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.0.0-next-20221006 #1 Not tainted
------------------------------------------------------
syz-executor.5/4053 is trying to acquire lock:
ffffffff853fac98 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0xe/0x70
but task is already holding lock:
ffff88803fc92020 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&ctx->lock){....}-{2:2}:
_raw_spin_lock+0x2a/0x40
__perf_event_task_sched_out+0x53b/0x18d0
__schedule+0xedd/0x2470
schedule+0xda/0x1b0
exit_to_user_mode_prepare+0x114/0x1a0
syscall_exit_to_user_mode+0x19/0x40
do_syscall_64+0x48/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #2 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x30/0x40
raw_spin_rq_lock_nested+0x1e/0x30
task_fork_fair+0x63/0x4d0
sched_cgroup_fork+0x3d0/0x540
copy_process+0x4183/0x6e20
kernel_clone+0xe7/0x890
user_mode_thread+0xad/0xf0
rest_init+0x24/0x250
arch_call_rest_init+0xf/0x14
start_kernel+0x4c6/0x4eb
secondary_startup_64_no_verify+0xe0/0xeb
-> #1 (&p->pi_lock){-.-.}-{2:2}:
_raw_spin_lock_irqsave+0x39/0x60
try_to_wake_up+0xab/0x1930
up+0x75/0xb0
__up_console_sem+0x6e/0x80
console_unlock+0x46a/0x590
vt_ioctl+0x2822/0x2ca0
tty_ioctl+0x785/0x16b0
__x64_sys_ioctl+0x19a/0x210
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
-> #0 ((console_sem).lock){-...}-{2:2}:
__lock_acquire+0x2a02/0x5e70
lock_acquire+0x1a2/0x530
_raw_spin_lock_irqsave+0x39/0x60
down_trylock+0xe/0x70
__down_trylock_console_sem+0x3b/0xd0
vprintk_emit+0x16b/0x560
vprintk+0x84/0xa0
_printk+0xba/0xf1
report_bug.cold+0x72/0xab
handle_bug+0x3c/0x70
exc_invalid_op+0x14/0x50
asm_exc_invalid_op+0x16/0x20
event_filter_match+0x422/0x660
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
__vunmap+0x79e/0xbf0
__vfree+0x3c/0xd0
vfree+0x62/0x90
netlink_skb_destructor+0xc2/0x210
skb_release_head_state+0x7e/0x270
consume_skb+0x89/0x160
netlink_unicast+0x556/0x800
netlink_sendmsg+0x915/0xe10
sock_sendmsg+0x154/0x190
____sys_sendmsg+0x744/0x930
___sys_sendmsg+0x110/0x1b0
__sys_sendmsg+0xf3/0x1c0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info that might help us debug this:
Chain exists of:
(console_sem).lock --> &rq->__lock --> &ctx->lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&ctx->lock);
lock(&rq->__lock);
lock(&ctx->lock);
lock((console_sem).lock);
*** DEADLOCK ***
2 locks held by syz-executor.5/4053:
#0: ffff88806ce3d2e0 (&cpuctx_lock){....}-{2:2}, at: __perf_event_task_sched_in+0x28f/0x6e0
#1: ffff88803fc92020 (&ctx->lock){....}-{2:2}, at: __perf_event_task_sched_in+0x2a0/0x6e0
stack backtrace:
CPU: 0 PID: 4053 Comm: syz-executor.5 Not tainted 6.0.0-next-20221006 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0x8b/0xb3
check_noncircular+0x263/0x2e0
__lock_acquire+0x2a02/0x5e70
lock_acquire+0x1a2/0x530
_raw_spin_lock_irqsave+0x39/0x60
down_trylock+0xe/0x70
__down_trylock_console_sem+0x3b/0xd0
vprintk_emit+0x16b/0x560
vprintk+0x84/0xa0
_printk+0xba/0xf1
report_bug.cold+0x72/0xab
handle_bug+0x3c/0x70
exc_invalid_op+0x14/0x50
asm_exc_invalid_op+0x16/0x20
RIP: 0010:event_filter_match+0x422/0x660
Code: 00 00 00 e9 7c fc ff ff e8 4b 2a f1 ff 65 8b 2d 10 83 ad 7e 31 ff 89 ee e8 eb 26 f1 ff 85 ed 0f 84 ef 00 00 00 e8 2e 2a f1 ff <0f> 0b eb 9f e8 25 9f 23 00 e9 17 fc ff ff e8 1b 2a f1 ff 48 8d 7b
RSP: 0018:ffff88801d9cf340 EFLAGS: 00010006
RAX: 0000000040000002 RBX: ffff88801d398b90 RCX: 0000000000000000
RDX: ffff888040c89ac0 RSI: ffffffff8154f2c2 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
R10: 0000000000000000 R11: ffffffff865b601b R12: ffff88801d398db0
R13: 0000000000000000 R14: ffff88801d398c38 R15: ffff88801d398db0
merge_sched_in+0x107/0x1110
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
ctx_sched_in+0x2e6/0x770
perf_event_sched_in+0x58/0x80
__perf_event_task_sched_in+0x408/0x6e0
finish_task_switch.isra.0+0x46d/0x8a0
__schedule+0x89b/0x2470
preempt_schedule_common+0x45/0xc0
__cond_resched+0x17/0x30
__vunmap+0x79e/0xbf0
__vfree+0x3c/0xd0
vfree+0x62/0x90
netlink_skb_destructor+0xc2/0x210
skb_release_head_state+0x7e/0x270
consume_skb+0x89/0x160
netlink_unicast+0x556/0x800
netlink_sendmsg+0x915/0xe10
sock_sendmsg+0x154/0x190
____sys_sendmsg+0x744/0x930
___sys_sendmsg+0x110/0x1b0
__sys_sendmsg+0xf3/0x1c0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f44d7d84b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f44d52fa188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f44d7e97f60 RCX: 00007f44d7d84b19
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000008
RBP: 00007f44d7ddef6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeca7e8f1f R14: 00007f44d52fa300 R15: 0000000000022000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
WARNING: CPU: 0 PID: 4053 at kernel/events/core.c:2233 event_filter_match+0x422/0x660
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Modules linked in:
CPU: 0 PID: 4053 Comm: syz-executor.5 Not tainted 6.0.0-next-20221006 #1
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RIP: 0010:event_filter_match+0x422/0x660
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Code: 00 00 00 e9 7c fc ff ff e8 4b 2a f1 ff 65 8b 2d 10 83 ad 7e 31 ff 89 ee e8 eb 26 f1 ff 85 ed 0f 84 ef 00 00 00 e8 2e 2a f1 ff <0f> 0b eb 9f e8 25 9f 23 00 e9 17 fc ff ff e8 1b 2a f1 ff 48 8d 7b
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RSP: 0018:ffff88801d9cf340 EFLAGS: 00010006
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RAX: 0000000040000002 RBX: ffff88801d398b90 RCX: 0000000000000000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RDX: ffff888040c89ac0 RSI: ffffffff8154f2c2 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000001
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
R10: 0000000000000000 R11: ffffffff865b601b R12: ffff88801d398db0
R13: 0000000000000000 R14: ffff88801d398c38 R15: ffff88801d398db0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
FS: 00007f44d52fa700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
CR2: 0000555555b7dc98 CR3: 000000001776a000 CR4: 0000000000350ef0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Call Trace:
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
merge_sched_in+0x107/0x1110
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
visit_groups_merge.constprop.0.isra.0+0x4fc/0xef0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
ctx_sched_in+0x2e6/0x770
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
perf_event_sched_in+0x58/0x80
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__perf_event_task_sched_in+0x408/0x6e0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
finish_task_switch.isra.0+0x46d/0x8a0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__schedule+0x89b/0x2470
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
preempt_schedule_common+0x45/0xc0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__cond_resched+0x17/0x30
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__vunmap+0x79e/0xbf0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__vfree+0x3c/0xd0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
vfree+0x62/0x90
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
netlink_skb_destructor+0xc2/0x210
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
skb_release_head_state+0x7e/0x270
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
consume_skb+0x89/0x160
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
netlink_unicast+0x556/0x800
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
netlink_sendmsg+0x915/0xe10
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sock_sendmsg+0x154/0x190
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
____sys_sendmsg+0x744/0x930
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
___sys_sendmsg+0x110/0x1b0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
__sys_sendmsg+0xf3/0x1c0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
do_syscall_64+0x3b/0x90
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
entry_SYSCALL_64_after_hwframe+0x63/0xcd
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RIP: 0033:0x7f44d7d84b19
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RSP: 002b:00007f44d52fa188 EFLAGS: 00000246
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f44d7e97f60 RCX: 00007f44d7d84b19
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000000000008
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
RBP: 00007f44d7ddef6d R08: 0000000000000000 R09: 0000000000000000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffeca7e8f1f R14: 00007f44d52fa300 R15: 0000000000022000
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
irq event stamp: 1994
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hardirqs last enabled at (1993): [] _raw_spin_unlock_irqrestore+0x28/0x60
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
hardirqs last disabled at (1994): [] __schedule+0x1225/0x2470
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
softirqs last enabled at (1948): [] netlink_insert+0x187/0x1700
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
softirqs last disabled at (1946): [] release_sock+0x1b/0x1b0
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
---[ end trace 0000000000000000 ]---
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
loop7: detected capacity change from 0 to 128
FAT-fs (loop7): Unrecognized mount option "_šëÎise_type=imastype=" or missing value
----------------
Code disassembly (best guess), 1 bytes skipped:
0: ff c3 inc %ebx
2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 40 00 nopl 0x0(%rax)
10: 48 89 f8 mov %rdi,%rax
13: 48 89 f7 mov %rsi,%rdi
16: 48 89 d6 mov %rdx,%rsi
19: 48 89 ca mov %rcx,%rdx
1c: 4d 89 c2 mov %r8,%r10
1f: 4d 89 c8 mov %r9,%r8
22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
27: 0f 05 syscall
* 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
2f: 73 01 jae 0x32
31: c3 retq
32: 48 c7 c1 bc ff ff ff mov $0xffffffffffffffbc,%rcx
39: f7 d8 neg %eax
3b: 64 89 01 mov %eax,%fs:(%rcx)
3e: 48 rex.W