R10: 0000000080000001 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffaecdc70f R14: 00007fdbf7fe2300 R15: 0000000000022000
Call Trace:
======================================================
WARNING: possible circular locking dependency detected
5.18.0-rc3-next-20220422 #1 Not tainted
------------------------------------------------------
syz-executor.2/18533 is trying to acquire lock:
ffffffff851f6b58 ((console_sem).lock){-.-.}-{2:2}, at: down_trylock+0xe/0x60
but task is already holding lock:
ffff888008e5c820 (&ctx->lock){-.-.}-{2:2}, at: __perf_install_in_context+0x12d/0xa40
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+0x537/0x1970
__schedule+0xec4/0x2450
preempt_schedule_common+0x45/0xc0
__cond_resched+0x13/0x20
__mutex_lock+0xa3/0x14c0
__do_sys_perf_event_open+0x1d13/0x3040
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
-> #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+0x343/0x490
copy_process+0x4082/0x6db0
kernel_clone+0xe7/0xa60
kernel_thread+0xb5/0xf0
rest_init+0x24/0x250
arch_call_rest_init+0xf/0x14
start_kernel+0x4cd/0x4ee
secondary_startup_64_no_verify+0xe0/0xeb
-> #1 (&p->pi_lock){-.-.}-{2:2}:
_raw_spin_lock_irqsave+0x39/0x50
try_to_wake_up+0xa5/0x1060
up+0x75/0xb0
__up_console_sem+0x6e/0x80
console_unlock+0x603/0xd40
con_install+0x14e/0x5c0
tty_init_dev.part.0+0xa0/0x610
tty_open+0xbb9/0x1370
chrdev_open+0x268/0x6d0
do_dentry_open+0x49f/0x10b0
path_openat+0x1a11/0x2870
do_filp_open+0x1aa/0x400
do_sys_openat2+0x16d/0x4c0
__x64_sys_openat+0x13f/0x1f0
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
-> #0 ((console_sem).lock){-.-.}-{2:2}:
__lock_acquire+0x2c2f/0x6120
lock_acquire+0x1a2/0x530
_raw_spin_lock_irqsave+0x39/0x50
down_trylock+0xe/0x60
__down_trylock_console_sem+0x3b/0xd0
vprintk_emit+0x162/0x550
vprintk+0x80/0x90
_printk+0xba/0xed
show_trace_log_lvl+0x57/0x2bb
ex_handler_msr+0x311/0x3a0
fixup_exception+0x307/0xff0
gp_try_fixup_and_notify.constprop.0+0x1e/0x120
exc_general_protection+0xe4/0x210
asm_exc_general_protection+0x1e/0x30
x86_pmu_enable_event+0x264/0x2f0
amd_pmu_enable_all+0x12c/0x1a0
x86_pmu_enable+0x580/0xd90
ctx_resched+0x2b0/0x390
__perf_install_in_context+0x285/0xa40
remote_function+0x125/0x1b0
generic_exec_single+0x203/0x300
smp_call_function_single+0x189/0x460
task_function_call+0xe5/0x170
perf_install_in_context+0x2cb/0x590
__do_sys_perf_event_open+0x1bf0/0x3040
do_syscall_64+0x3b/0x90
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.2/18533:
#0: ffff888008134960 (&sig->exec_update_lock){++++}-{3:3}, at: __do_sys_perf_event_open+0x1023/0x3040
#1: ffff888008e5c8b0 (&ctx->mutex){+.+.}-{3:3}, at: __do_sys_perf_event_open+0x17cd/0x3040
#2: ffff88806cf3f220 (&cpuctx_lock){-.-.}-{2:2}, at: __perf_install_in_context+0xeb/0xa40
#3: ffff888008e5c820 (&ctx->lock){-.-.}-{2:2}, at: __perf_install_in_context+0x12d/0xa40
stack backtrace:
CPU: 1 PID: 18533 Comm: syz-executor.2 Not tainted 5.18.0-rc3-next-20220422 #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_lvl+0x8b/0xb3
check_noncircular+0x25f/0x2e0
__lock_acquire+0x2c2f/0x6120
lock_acquire+0x1a2/0x530
_raw_spin_lock_irqsave+0x39/0x50
down_trylock+0xe/0x60
__down_trylock_console_sem+0x3b/0xd0
vprintk_emit+0x162/0x550
vprintk+0x80/0x90
_printk+0xba/0xed
show_trace_log_lvl+0x57/0x2bb
ex_handler_msr+0x311/0x3a0
fixup_exception+0x307/0xff0
gp_try_fixup_and_notify.constprop.0+0x1e/0x120
exc_general_protection+0xe4/0x210
asm_exc_general_protection+0x1e/0x30
RIP: 0010:x86_pmu_enable_event+0x264/0x2f0
Code: 74 78 e8 2f 1c 43 00 89 ef be 01 00 00 00 e8 43 35 3f 03 89 c5 e8 1c 1c 43 00 41 01 ec 4c 89 f2 44 89 f0 48 c1 ea 20 44 89 e1 <0f> 30 66 90 e8 03 1c 43 00 e9 7d fe ff ff e8 f9 1b 43 00 31 d2 4c
RSP: 0018:ffff888044a2f940 EFLAGS: 00010016
RAX: 00000000004000ff RBX: ffff8880438acac0 RCX: 00000000c0010202
RDX: 000000000000000f RSI: ffffffff810104c4 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81015bed R11: 0000000000000000 R12: 00000000c0010202
R13: 0000020000000000 R14: 0000000f004000ff R15: ffffffff81015b60
amd_pmu_enable_all+0x12c/0x1a0
x86_pmu_enable+0x580/0xd90
ctx_resched+0x2b0/0x390
__perf_install_in_context+0x285/0xa40
remote_function+0x125/0x1b0
generic_exec_single+0x203/0x300
smp_call_function_single+0x189/0x460
task_function_call+0xe5/0x170
perf_install_in_context+0x2cb/0x590
__do_sys_perf_event_open+0x1bf0/0x3040
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fbc18cb2b19
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:00007fbc16228188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fbc18dc5f60 RCX: 00007fbc18cb2b19
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007fbc18d0cf6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa38ad6bf R14: 00007fbc16228300 R15: 0000000000022000
amd_pmu_enable_all+0x12c/0x1a0
x86_pmu_enable+0x580/0xd90
ctx_resched+0x2b0/0x390
__perf_install_in_context+0x285/0xa40
remote_function+0x125/0x1b0
generic_exec_single+0x203/0x300
smp_call_function_single+0x189/0x460
task_function_call+0xe5/0x170
perf_install_in_context+0x2cb/0x590
__do_sys_perf_event_open+0x1bf0/0x3040
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fbc18cb2b19
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:00007fbc16228188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fbc18dc5f60 RCX: 00007fbc18cb2b19
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007fbc18d0cf6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa38ad6bf R14: 00007fbc16228300 R15: 0000000000022000
Call Trace:
amd_pmu_enable_all+0x12c/0x1a0
x86_pmu_enable+0x580/0xd90
perf_event_task_tick+0xa7c/0x1030
scheduler_tick+0x17e/0x350
update_process_times+0x18b/0x1f0
tick_sched_handle+0x9b/0x180
tick_sched_timer+0xee/0x120
__hrtimer_run_queues+0x1ca/0xbd0
hrtimer_interrupt+0x315/0x770
__sysvec_apic_timer_interrupt+0x144/0x4f0
sysvec_apic_timer_interrupt+0x89/0xc0
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:generic_exec_single+0x20c/0x300
Code: 31 e4 4c 89 ef e8 24 1c 06 03 e9 ec fe ff ff e8 3a 04 0a 00 e8 b5 c0 10 00 4c 89 ef e8 0d 1c 06 03 e8 28 c2 10 00 fb 45 31 e4 cc fe ff ff e8 1a 04 0a 00 0f 0b e9 73 ff ff ff 4c 89 f7 e8 7b
RSP: 0018:ffff888044a2fb08 EFLAGS: 00000246
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffffffff0b1d299
RDX: 0000000000000000 RSI: ffffffff814adf31 RDI: ffffffff813a1cb8
RBP: ffffffff81525f80 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff814adf18 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888044a2fc38 R14: ffff888044a2fb88 R15: 0000000000000200
smp_call_function_single+0x189/0x460
task_function_call+0xe5/0x170
perf_install_in_context+0x2cb/0x590
__do_sys_perf_event_open+0x1bf0/0x3040
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fbc18cb2b19
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:00007fbc16228188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fbc18dc5f60 RCX: 00007fbc18cb2b19
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000020000280
RBP: 00007fbc18d0cf6d R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffa38ad6bf R14: 00007fbc16228300 R15: 0000000000022000
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 18712 Comm: syz-executor.4 Not tainted 5.18.0-rc3-next-20220422 #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_lvl+0x8b/0xb3
should_fail.cold+0x5/0xa
prepare_alloc_pages+0x17b/0x500
__alloc_pages+0x131/0x4e0
alloc_pages+0x1a0/0x2f0
filemap_alloc_folio+0x8e/0xb0
page_cache_ra_unbounded+0x1af/0x540
ondemand_readahead+0x642/0x1270
page_cache_async_ra+0xf8/0x130
filemap_get_pages+0x686/0x1680
filemap_read+0x311/0xba0
generic_file_read_iter+0x3c9/0x530
ext4_file_read_iter+0x184/0x3f0
generic_file_splice_read+0x3b9/0x5d0
do_splice_to+0x1bc/0x240
splice_direct_to_actor+0x2c7/0x8e0
do_splice_direct+0x1b8/0x280
do_sendfile+0xad7/0x1230
__x64_sys_sendfile64+0x1cd/0x210
do_syscall_64+0x3b/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fdbfaa6cb19
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:00007fdbf7fe2188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fdbfab7ff60 RCX: 00007fdbfaa6cb19
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 00007fdbf7fe21d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000001 R11: 0000000000000246 R12: 0000000000000002
R13: 00007fffaecdc70f R14: 00007fdbf7fe2300 R15: 0000000000022000
debugfs: Directory 'loop0' with parent 'block' already present!
----------------
Code disassembly (best guess):
0: 74 78 je 0x7a
2: e8 2f 1c 43 00 callq 0x431c36
7: 89 ef mov %ebp,%edi
9: be 01 00 00 00 mov $0x1,%esi
e: e8 43 35 3f 03 callq 0x33f3556
13: 89 c5 mov %eax,%ebp
15: e8 1c 1c 43 00 callq 0x431c36
1a: 41 01 ec add %ebp,%r12d
1d: 4c 89 f2 mov %r14,%rdx
20: 44 89 f0 mov %r14d,%eax
23: 48 c1 ea 20 shr $0x20,%rdx
27: 44 89 e1 mov %r12d,%ecx
* 2a: 0f 30 wrmsr <-- trapping instruction
2c: 66 90 xchg %ax,%ax
2e: e8 03 1c 43 00 callq 0x431c36
33: e9 7d fe ff ff jmpq 0xfffffeb5
38: e8 f9 1b 43 00 callq 0x431c36
3d: 31 d2 xor %edx,%edx
3f: 4c rex.WR