rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-0): P6089/1:b..l
rcu: (detected by 0, t=12712 jiffies, g=37425, q=1166 ncpus=1)
task:cmp state:R running task stack:24104 pid:6089 tgid:6089 ppid:6085 task_flags:0x400000 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5401 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6790
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7113
irqentry_exit+0x6f/0x90 kernel/entry/common.c:307
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0xc9c/0x2390 arch/x86/kernel/unwind_orc.c:-1
Code: 4c 8b 6c 24 50 4c 8b 64 24 10 74 08 48 89 df e8 4a 03 b1 00 4c 89 23 ba 10 00 00 00 4c 89 ef 31 f6 e8 18 05 b1 00 48 8b 14 24 c5 04 00 00 4c 89 7c 24 28 48 89 5c 24 78 4d 8d 66 08 4d 89 e5
RSP: 0018:ffffc9000126f218 EFLAGS: 00000246
RAX: ffffc9000126f398 RBX: ffffc9000126f380 RCX: 0000000000000000
RDX: ffffffff903180f6 RSI: 0000000000000000 RDI: ffffc9000126f3a8
RBP: dffffc0000000000 R08: ffffc9000126f3a7 R09: 0000000000000000
R10: ffffc9000126f398 R11: fffff5200024de75 R12: ffffc9000126f348
R13: ffffc9000126f398 R14: ffffc9000126f348 R15: ffffc9000126f390
__unwind_start+0x5b9/0x760 arch/x86/kernel/unwind_orc.c:758
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe4/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4148 [inline]
slab_alloc_node mm/slub.c:4197 [inline]
kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4204
vm_area_alloc+0x24/0x140 mm/vma_init.c:31
__mmap_new_vma mm/vma.c:2452 [inline]
__mmap_region mm/vma.c:2622 [inline]
mmap_region+0xcc7/0x1f30 mm/vma.c:2692
do_mmap+0xc45/0x10d0 mm/mmap.c:561
vm_mmap_pgoff+0x31b/0x4c0 mm/util.c:579
ksys_mmap_pgoff+0x51f/0x760 mm/mmap.c:607
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12a0055242
RSP: 002b:00007ffc894c5558 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f129ff54000 RCX: 00007f12a0055242
RDX: 0000000000000003 RSI: 0000000000006000 RDI: 00007f129ff54000
RBP: 0000000000000812 R08: 0000000000000003 R09: 00000000001cc000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffc894c5618
R13: 00007f12a00295f0 R14: 00007ffc894c5d90 R15: 00000fff91298aae
rcu: rcu_preempt kthread timer wakeup didn't happen for 5189 jiffies! g37425 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=13687
rcu: rcu_preempt kthread starved for 5190 jiffies! g37425 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:I stack:27432 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5401 [inline]
__schedule+0x16f5/0x4d00 kernel/sched/core.c:6790
__schedule_loop kernel/sched/core.c:6868 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6883
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 6090 Comm: syz-executor Not tainted 6.16.0-rc5-syzkaller-g8c2e52ebbe88 #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:apparmor_bprm_creds_for_exec+0x24d2/0x3870 security/apparmor/domain.c:-1
Code: e8 33 63 44 fd 48 89 df e8 0b ee 9c fd eb 05 e8 24 63 44 fd 48 8b 44 24 20 48 85 c0 0f 84 b2 eb ff ff 48 89 c3 e8 0e 63 44 fd <48> 89 d8 48 3d 01 f0 ff ff 48 8b 54 24 68 48 89 c3 72 0a e8 f6 62
RSP: 0018:ffffc9000d59f920 EFLAGS: 00000293
RAX: ffffffff847bae1f RBX: ffff88801b2f3d00 RCX: ffff888036414880
RDX: 0000000000000000 RSI: 00000000000003d7 RDI: 000000007ffffffe
RBP: ffffc9000d59fcd0 R08: ffff88801b2f3d03 R09: 1ffff1100365e7a0
R10: dffffc0000000000 R11: ffffed100365e7a1 R12: dffffc0000000000
R13: ffff888053e61c00 R14: 0000000000000010 R15: ffff888043339f70
FS: 000055557bde0500(0000) GS:ffff88808d21b000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e3cbfaff8 CR3: 000000003f6fa000 CR4: 0000000000352ef0
Call Trace:
security_bprm_creds_for_exec+0xb1/0x270 security/security.c:1261
bprm_execve+0x612/0x1450 fs/exec.c:1750
do_execveat_common+0x510/0x6a0 fs/exec.c:1860
do_execve fs/exec.c:1934 [inline]
__do_sys_execve fs/exec.c:2010 [inline]
__se_sys_execve fs/exec.c:2005 [inline]
__x64_sys_execve+0x94/0xb0 fs/exec.c:2005
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8e3bdc0837
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 3b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8e3cbfadf8 EFLAGS: 00000206 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007ffca67e7ef9 RCX: 00007f8e3bdc0837
RDX: 00007ffca67e5e00 RSI: 00007ffca67e6040 RDI: 00007ffca67e7ef9
RBP: 00007f8e3cbfae70 R08: 00007f8e3cbfaf20 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000206 R12: 00007ffca67e6040
R13: 00007ffca67e5e00 R14: 0000000000000000 R15: 0000000000000000