EXT4-fs (loop7): revision level too high, forcing read-only mode
Call Trace:
======================================================
WARNING: possible circular locking dependency detected
5.16.0-rc4-next-20211208 #1 Not tainted
------------------------------------------------------
syz-executor.1/4275 is trying to acquire lock:
ffffffff851f4dd8 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0xe/0x60 kernel/locking/semaphore.c:138
but task is already holding lock:
ffff888041364420 (&ctx->lock){....}-{2:2}, at: __perf_install_in_context+0x12d/0x310 kernel/events/core.c:2780
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #3 (&ctx->lock){....}-{2:2}:
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
perf_event_context_sched_out kernel/events/core.c:3489 [inline]
__perf_event_task_sched_out+0x519/0x1930 kernel/events/core.c:3597
perf_event_task_sched_out include/linux/perf_event.h:1234 [inline]
prepare_task_switch kernel/sched/core.c:4796 [inline]
context_switch kernel/sched/core.c:4938 [inline]
__schedule+0xead/0x2160 kernel/sched/core.c:6296
preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6462
__cond_resched+0x13/0x20 kernel/sched/core.c:8175
might_resched include/linux/kernel.h:101 [inline]
__mutex_lock_common kernel/locking/mutex.c:577 [inline]
__mutex_lock+0xa3/0x1480 kernel/locking/mutex.c:733
__do_sys_perf_event_open+0x1d13/0x3040 kernel/events/core.c:12441
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
-> #2 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x30/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x1e/0x30 kernel/sched/core.c:489
raw_spin_rq_lock kernel/sched/sched.h:1318 [inline]
rq_lock kernel/sched/sched.h:1616 [inline]
task_fork_fair+0x63/0x4d0 kernel/sched/fair.c:11200
sched_post_fork+0x343/0x490 kernel/sched/core.c:4462
copy_process+0x531e/0x6be0 kernel/fork.c:2383
kernel_clone+0xe7/0xa60 kernel/fork.c:2559
kernel_thread+0xb5/0xf0 kernel/fork.c:2611
rest_init+0x24/0x3d0 init/main.c:692
start_kernel+0x484/0x4a5 init/main.c:1141
secondary_startup_64_no_verify+0xd5/0xdb
-> #1 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
try_to_wake_up+0xac/0x14c0 kernel/sched/core.c:4017
up+0x75/0xb0 kernel/locking/semaphore.c:190
__up_console_sem+0x6e/0x80 kernel/printk/printk.c:255
console_unlock+0x53e/0xae0 kernel/printk/printk.c:2730
vprintk_emit+0x198/0x450 kernel/printk/printk.c:2248
vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
_printk+0xba/0xed kernel/printk/printk.c:2269
kauditd_printk_skb kernel/audit.c:538 [inline]
kauditd_hold_skb.cold+0x41/0x50 kernel/audit.c:571
kauditd_send_queue+0x1ab/0x220 kernel/audit.c:734
kauditd_thread+0x762/0xba0 kernel/audit.c:860
kthread+0x40c/0x500 kernel/kthread.c:345
ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:295
-> #0 ((console_sem).lock){-.-.}-{2:2}:
check_prev_add kernel/locking/lockdep.c:3063 [inline]
check_prevs_add kernel/locking/lockdep.c:3186 [inline]
validate_chain kernel/locking/lockdep.c:3801 [inline]
__lock_acquire+0x2a14/0x5b70 kernel/locking/lockdep.c:5027
lock_acquire kernel/locking/lockdep.c:5639 [inline]
lock_acquire+0x1a2/0x4d0 kernel/locking/lockdep.c:5604
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
down_trylock+0xe/0x60 kernel/locking/semaphore.c:138
__down_trylock_console_sem+0x3b/0xd0 kernel/printk/printk.c:238
console_trylock kernel/printk/printk.c:2545 [inline]
console_trylock_spinning kernel/printk/printk.c:1846 [inline]
vprintk_emit+0x146/0x450 kernel/printk/printk.c:2247
vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
_printk+0xba/0xed kernel/printk/printk.c:2269
show_trace_log_lvl+0x57/0x2bb arch/x86/kernel/dumpstack.c:195
ex_handler_wrmsr_unsafe arch/x86/mm/extable.c:87 [inline]
fixup_exception+0x3f7/0x700 arch/x86/mm/extable.c:150
__exc_general_protection arch/x86/kernel/traps.c:601 [inline]
exc_general_protection+0xed/0x2f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:562
wrmsrl arch/x86/include/asm/msr.h:281 [inline]
__x86_pmu_enable_event arch/x86/events/perf_event.h:1120 [inline]
x86_pmu_enable_all+0x2f7/0x3c0 arch/x86/events/core.c:743
x86_pmu_enable+0x580/0xd90 arch/x86/events/core.c:1350
perf_pmu_enable kernel/events/core.c:1207 [inline]
perf_pmu_enable kernel/events/core.c:1203 [inline]
ctx_resched+0x2b0/0x390 kernel/events/core.c:2750
__perf_install_in_context+0x285/0x310 kernel/events/core.c:2817
remote_function kernel/events/core.c:91 [inline]
remote_function+0x125/0x1b0 kernel/events/core.c:71
generic_exec_single+0x203/0x300 kernel/smp.c:518
smp_call_function_single+0x189/0x460 kernel/smp.c:755
task_function_call+0xe5/0x170 kernel/events/core.c:119
perf_install_in_context+0x2cb/0x550 kernel/events/core.c:2918
__do_sys_perf_event_open+0x1bf0/0x3040 kernel/events/core.c:12429
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
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 ***
4 locks held by syz-executor.1/4275:
#0: ffff888039f7ae60 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0x1023/0x3040 kernel/events/core.c:12269
#1: ffff8880413644b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x17cd/0x3040 kernel/events/core.c:12323
#2: ffff88806ce3ef20 (&cpuctx_lock){-.-.}-{2:2}, at: __perf_install_in_context+0xf4/0x310 kernel/events/core.c:2778
#3: ffff888041364420 (&ctx->lock){....}-{2:2}, at: __perf_install_in_context+0x12d/0x310 kernel/events/core.c:2780
stack backtrace:
CPU: 0 PID: 4275 Comm: syz-executor.1 Not tainted 5.16.0-rc4-next-20211208 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x8b/0xb3 lib/dump_stack.c:106
check_noncircular+0x25f/0x2e0 kernel/locking/lockdep.c:2143
check_prev_add kernel/locking/lockdep.c:3063 [inline]
check_prevs_add kernel/locking/lockdep.c:3186 [inline]
validate_chain kernel/locking/lockdep.c:3801 [inline]
__lock_acquire+0x2a14/0x5b70 kernel/locking/lockdep.c:5027
lock_acquire kernel/locking/lockdep.c:5639 [inline]
lock_acquire+0x1a2/0x4d0 kernel/locking/lockdep.c:5604
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
down_trylock+0xe/0x60 kernel/locking/semaphore.c:138
__down_trylock_console_sem+0x3b/0xd0 kernel/printk/printk.c:238
console_trylock kernel/printk/printk.c:2545 [inline]
console_trylock_spinning kernel/printk/printk.c:1846 [inline]
vprintk_emit+0x146/0x450 kernel/printk/printk.c:2247
vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
_printk+0xba/0xed kernel/printk/printk.c:2269
show_trace_log_lvl+0x57/0x2bb arch/x86/kernel/dumpstack.c:195
ex_handler_wrmsr_unsafe arch/x86/mm/extable.c:87 [inline]
fixup_exception+0x3f7/0x700 arch/x86/mm/extable.c:150
__exc_general_protection arch/x86/kernel/traps.c:601 [inline]
exc_general_protection+0xed/0x2f0 arch/x86/kernel/traps.c:562
asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:562
RIP: 0010:__wrmsr arch/x86/include/asm/msr.h:103 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:160 [inline]
RIP: 0010:wrmsrl arch/x86/include/asm/msr.h:281 [inline]
RIP: 0010:__x86_pmu_enable_event arch/x86/events/perf_event.h:1120 [inline]
RIP: 0010:x86_pmu_enable_all+0x2f7/0x3c0 arch/x86/events/core.c:743
Code: 00 8b 7c 24 1c 48 8b 44 24 10 0f ae e8 ff d0 89 44 24 10 e8 2b 34 42 00 4c 89 fa 8b 4c 24 08 4c 89 f8 03 4c 24 10 48 c1 ea 20 <0f> 30 66 90 e8 10 34 42 00 e9 cc fd ff ff 48 83 c4 20 5b 5d 41 5c
RSP: 0018:ffff8880428e7968 EFLAGS: 00010016
RAX: 0000000f004000ff RBX: ffff8880081b8b80 RCX: 00000000c0010202
RDX: 000000000000000f RSI: ffffffff8100e155 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81015d2d R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88806ce217e0 R14: ffff88806ce219e0 R15: 0000000f004000ff
x86_pmu_enable+0x580/0xd90 arch/x86/events/core.c:1350
perf_pmu_enable kernel/events/core.c:1207 [inline]
perf_pmu_enable kernel/events/core.c:1203 [inline]
ctx_resched+0x2b0/0x390 kernel/events/core.c:2750
__perf_install_in_context+0x285/0x310 kernel/events/core.c:2817
remote_function kernel/events/core.c:91 [inline]
remote_function+0x125/0x1b0 kernel/events/core.c:71
generic_exec_single+0x203/0x300 kernel/smp.c:518
smp_call_function_single+0x189/0x460 kernel/smp.c:755
task_function_call+0xe5/0x170 kernel/events/core.c:119
perf_install_in_context+0x2cb/0x550 kernel/events/core.c:2918
__do_sys_perf_event_open+0x1bf0/0x3040 kernel/events/core.c:12429
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f57e1d78b19
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:00007f57df2cd188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f57e1e8c020 RCX: 00007f57e1d78b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007f57e1dd2f6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc3a9f371f R14: 00007f57df2cd300 R15: 0000000000022000
loop2: detected capacity change from 0 to 264192
x86_pmu_enable+0x580/0xd90 arch/x86/events/core.c:1350
EXT4-fs (loop7): mounted filesystem without journal. Opts: nobh,,errors=continue. Quota mode: writeback.
perf_pmu_enable kernel/events/core.c:1207 [inline]
perf_pmu_enable kernel/events/core.c:1203 [inline]
ctx_resched+0x2b0/0x390 kernel/events/core.c:2750
EXT4-fs (loop2): quotafile must be on filesystem root
__perf_install_in_context+0x285/0x310 kernel/events/core.c:2817
remote_function kernel/events/core.c:91 [inline]
remote_function+0x125/0x1b0 kernel/events/core.c:71
generic_exec_single+0x203/0x300 kernel/smp.c:518
smp_call_function_single+0x189/0x460 kernel/smp.c:755
task_function_call+0xe5/0x170 kernel/events/core.c:119
perf_install_in_context+0x2cb/0x550 kernel/events/core.c:2918
__do_sys_perf_event_open+0x1bf0/0x3040 kernel/events/core.c:12429
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f57e1d78b19
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:00007f57df2cd188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f57e1e8c020 RCX: 00007f57e1d78b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007f57e1dd2f6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc3a9f371f R14: 00007f57df2cd300 R15: 0000000000022000
loop0: detected capacity change from 0 to 4
EXT4-fs (loop0): Unrecognized mount option "delu“¿c" or missing value
nfs: Unknown parameter '€«Ç0'š§¹Ò¡VÉ '
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
loop7: detected capacity change from 0 to 4096
EXT4-fs (loop7): Ignoring removed nobh option
EXT4-fs (loop7): revision level too high, forcing read-only mode
EXT4-fs (loop7): mounted filesystem without journal. Opts: nobh,,errors=continue. Quota mode: writeback.
loop7: detected capacity change from 0 to 4096
EXT4-fs (loop7): Ignoring removed nobh option
EXT4-fs (loop7): revision level too high, forcing read-only mode
EXT4-fs (loop7): mounted filesystem without journal. Opts: nobh,,errors=continue. Quota mode: writeback.
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
----------------
Code disassembly (best guess):
0: 00 8b 7c 24 1c 48 add %cl,0x481c247c(%rbx)
6: 8b 44 24 10 mov 0x10(%rsp),%eax
a: 0f ae e8 lfence
d: ff d0 callq *%rax
f: 89 44 24 10 mov %eax,0x10(%rsp)
13: e8 2b 34 42 00 callq 0x423443
18: 4c 89 fa mov %r15,%rdx
1b: 8b 4c 24 08 mov 0x8(%rsp),%ecx
1f: 4c 89 f8 mov %r15,%rax
22: 03 4c 24 10 add 0x10(%rsp),%ecx
26: 48 c1 ea 20 shr $0x20,%rdx
* 2a: 0f 30 wrmsr <-- trapping instruction
2c: 66 90 xchg %ax,%ax
2e: e8 10 34 42 00 callq 0x423443
33: e9 cc fd ff ff jmpq 0xfffffe04
38: 48 83 c4 20 add $0x20,%rsp
3c: 5b pop %rbx
3d: 5d pop %rbp
3e: 41 5c pop %r12