rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (1 GPs behind) idle=6504/1/0x4000000000000000 softirq=44954/44955 fqs=129
rcu: (detected by 1, t=10502 jiffies, g=44949, q=1188 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 13610 Comm: syz.4.3395 Not tainted 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xdc/0x550 kernel/locking/lockdep.c:5796
Code: 08 0f 83 f4 02 00 00 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 28 d8 1b 90 be 08 00 00 00 e8 4c 2f 8b 00 48 0f a3 1d 5c 90 ab 0e <73> 16 e8 3d 7f 0a 00 84 c0 75 0d 80 3d e0 52 95 0e 00 0f 84 f9 02
RSP: 0018:ffffc90000007b20 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff817047c4
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901bd828
RBP: ffffc90000007c78 R08: ffffffff901bd82f R09: 1ffffffff2037b05
R10: dffffc0000000000 R11: fffffbfff2037b06 R12: 1ffff92000000f6c
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888034279360
FS: 00007f13da8f96c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa0d8656c0 CR3: 0000000065bdc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
advance_sched+0xa1e/0xca0 net/sched/sch_taprio.c:985
__run_hrtimer kernel/time/hrtimer.c:1691 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x996/0xeb0
Code: 48 21 c3 0f 85 16 02 00 00 e8 26 7d 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 17 7d 20 00 eb 06 e8 10 7d 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 d6 17 87 00 4c 8b
RSP: 0018:ffffc90002ddf3a0 EFLAGS: 00000283
RAX: ffffffff81745cb0 RBX: ffffffff8f16fa38 RCX: 0000000000040000
RDX: ffffc9000c0e1000 RSI: 0000000000005914 RDI: 0000000000005915
RBP: ffffc90002ddf550 R08: ffffffff81745c87 R09: 1ffffffff2852d00
R10: dffffc0000000000 R11: fffffbfff2852d01 R12: ffffffff8f16f9e0
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc90002ddf5a0
__console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3279
vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2407
_printk+0xd5/0x120 kernel/printk/printk.c:2432
bio_check_eod block/blk-core.c:543 [inline]
submit_bio_noacct+0xfcd/0x1910 block/blk-core.c:770
submit_bh fs/buffer.c:2824 [inline]
__bread_slow fs/buffer.c:1270 [inline]
__bread_gfp+0x23c/0x400 fs/buffer.c:1494
sb_bread include/linux/buffer_head.h:346 [inline]
udf_check_vsd fs/udf/super.c:772 [inline]
udf_load_vrs+0x394/0x1130 fs/udf/super.c:2006
udf_fill_super+0x5eb/0x1ed0 fs/udf/super.c:2192
get_tree_bdev+0x3f7/0x570 fs/super.c:1635
vfs_get_tree+0x90/0x2b0 fs/super.c:1800
do_new_mount+0x2be/0xb40 fs/namespace.c:3507
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4057 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13d9b7e719
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f13da8f9038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f13d9d35f80 RCX: 00007f13d9b7e719
RDX: 0000000020000080 RSI: 0000000020000140 RDI: 00000000200000c0
RBP: 00007f13d9bf132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f13d9d35f80 R15: 00007ffce3de01d8
rcu: rcu_preempt kthread starved for 10244 jiffies! g44949 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:R running task stack:25920 pid:17 tgid:17 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x185a/0x4b70 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 13638 Comm: syz.0.3401 Not tainted 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f3/0x2ca0 kernel/smp.c:884
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 86 f3 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 31 ef 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 15 ef
RSP: 0018:ffffc90002fff280 EFLAGS: 00000246
RAX: ffffffff8188eaab RBX: 1ffff110170c8ca5 RCX: 0000000000040000
RDX: ffffc90004b31000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90002fff480 R08: ffffffff8188ea7a R09: 1ffffffff2852d00
R10: dffffc0000000000 R11: fffffbfff2852d01 R12: dffffc0000000000
R13: ffff8880b8646528 R14: ffff8880b873fc40 R15: 0000000000000000
FS: 00007f5e2cbad6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ff18ff8 CR3: 0000000025d88000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2085 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2295
text_poke_bp+0xb0/0x100 arch/x86/kernel/alternative.c:2522
__static_call_transform+0x51a/0x810 arch/x86/kernel/static_call.c:111
arch_static_call_transform+0x141/0x380 arch/x86/kernel/static_call.c:163
__static_call_update+0xd8/0x5e0 kernel/static_call_inline.c:147
bpf_dispatcher_update kernel/bpf/dispatcher.c:126 [inline]
bpf_dispatcher_change_prog+0xe5f/0xf10 kernel/bpf/dispatcher.c:167
bpf_prog_test_run_xdp+0x753/0x11e0 net/bpf/test_run.c:1314
bpf_prog_test_run+0x2e4/0x360 kernel/bpf/syscall.c:4266
__sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5671
__do_sys_bpf kernel/bpf/syscall.c:5760 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5758 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5758
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e2bd7e719
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5e2cbad038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f5e2bf35f80 RCX: 00007f5e2bd7e719
RDX: 0000000000000050 RSI: 0000000020000640 RDI: 000000000000000a
RBP: 00007f5e2bdf132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5e2bf35f80 R15: 00007ffc46f53c08
watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz.0.3401:13638]
Modules linked in:
irq event stamp: 30009378
hardirqs last enabled at (30009377): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357
hardirqs last disabled at (30009378): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049
softirqs last enabled at (30009376): [] __do_softirq kernel/softirq.c:588 [inline]
softirqs last enabled at (30009376): [] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last enabled at (30009376): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
softirqs last disabled at (30009371): [] __do_softirq kernel/softirq.c:588 [inline]
softirqs last disabled at (30009371): [] invoke_softirq kernel/softirq.c:428 [inline]
softirqs last disabled at (30009371): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
CPU: 1 UID: 0 PID: 13638 Comm: syz.0.3401 Not tainted 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x19f3/0x2ca0 kernel/smp.c:884
Code: 45 8b 65 00 44 89 e6 83 e6 01 31 ff e8 86 f3 0b 00 41 83 e4 01 49 bc 00 00 00 00 00 fc ff df 75 07 e8 31 ef 0b 00 eb 38 f3 90 <42> 0f b6 04 23 84 c0 75 11 41 f7 45 00 01 00 00 00 74 1e e8 15 ef
RSP: 0018:ffffc90002fff280 EFLAGS: 00000246
RAX: ffffffff8188eaab RBX: 1ffff110170c8ca5 RCX: 0000000000040000
RDX: ffffc90004b31000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90002fff480 R08: ffffffff8188ea7a R09: 1ffffffff2852d00
R10: dffffc0000000000 R11: fffffbfff2852d01 R12: dffffc0000000000
R13: ffff8880b8646528 R14: ffff8880b873fc40 R15: 0000000000000000
FS: 00007f5e2cbad6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ff18ff8 CR3: 0000000025d88000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1051
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:2085 [inline]
text_poke_bp_batch+0x352/0xb30 arch/x86/kernel/alternative.c:2295
text_poke_bp+0xb0/0x100 arch/x86/kernel/alternative.c:2522
__static_call_transform+0x51a/0x810 arch/x86/kernel/static_call.c:111
arch_static_call_transform+0x141/0x380 arch/x86/kernel/static_call.c:163
__static_call_update+0xd8/0x5e0 kernel/static_call_inline.c:147
bpf_dispatcher_update kernel/bpf/dispatcher.c:126 [inline]
bpf_dispatcher_change_prog+0xe5f/0xf10 kernel/bpf/dispatcher.c:167
bpf_prog_test_run_xdp+0x753/0x11e0 net/bpf/test_run.c:1314
bpf_prog_test_run+0x2e4/0x360 kernel/bpf/syscall.c:4266
__sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5671
__do_sys_bpf kernel/bpf/syscall.c:5760 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5758 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5758
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e2bd7e719
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5e2cbad038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f5e2bf35f80 RCX: 00007f5e2bd7e719
RDX: 0000000000000050 RSI: 0000000020000640 RDI: 000000000000000a
RBP: 00007f5e2bdf132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5e2bf35f80 R15: 00007ffc46f53c08
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 13610 Comm: syz.4.3395 Not tainted 6.12.0-rc5-syzkaller-00044-gc1e939a21eb1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x18/0x90 kernel/kcov.c:314
Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 65 48 8b 14 25 80 d7 03 00 65 8b 05 70 f9 6e 7e <25> 00 01 ff 00 74 10 3d 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74
RSP: 0018:ffffc90000007c88 EFLAGS: 00000046
RAX: 0000000000010002 RBX: 0000000000000001 RCX: ffff888024f53c00
RDX: ffff888024f53c00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff89c3d623 R09: fffff52000000f80
R10: dffffc0000000000 R11: fffff52000000f80 R12: 0000000000000002
R13: ffffffff89c3d4d0 R14: ffff888034279340 R15: ffff888028f0dc00
FS: 00007f13da8f96c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffa0d8656c0 CR3: 0000000065bdc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
advance_sched+0x153/0xca0 net/sched/sch_taprio.c:927
__run_hrtimer kernel/time/hrtimer.c:1691 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1755
hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
__sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:console_flush_all+0x996/0xeb0
Code: 48 21 c3 0f 85 16 02 00 00 e8 26 7d 20 00 4c 8b 7c 24 10 4d 85 f6 75 07 e8 17 7d 20 00 eb 06 e8 10 7d 20 00 fb 48 8b 5c 24 18 <48> 8b 44 24 30 42 80 3c 28 00 74 08 48 89 df e8 d6 17 87 00 4c 8b
RSP: 0018:ffffc90002ddf3a0 EFLAGS: 00000283
RAX: ffffffff81745cb0 RBX: ffffffff8f16fa38 RCX: 0000000000040000
RDX: ffffc9000c0e1000 RSI: 0000000000005914 RDI: 0000000000005915
RBP: ffffc90002ddf550 R08: ffffffff81745c87 R09: 1ffffffff2852d00
R10: dffffc0000000000 R11: fffffbfff2852d01 R12: ffffffff8f16f9e0
R13: dffffc0000000000 R14: 0000000000000200 R15: ffffc90002ddf5a0
__console_flush_and_unlock kernel/printk/printk.c:3239 [inline]
console_unlock+0x14f/0x3b0 kernel/printk/printk.c:3279
vprintk_emit+0x730/0xa10 kernel/printk/printk.c:2407
_printk+0xd5/0x120 kernel/printk/printk.c:2432
bio_check_eod block/blk-core.c:543 [inline]
submit_bio_noacct+0xfcd/0x1910 block/blk-core.c:770
submit_bh fs/buffer.c:2824 [inline]
__bread_slow fs/buffer.c:1270 [inline]
__bread_gfp+0x23c/0x400 fs/buffer.c:1494
sb_bread include/linux/buffer_head.h:346 [inline]
udf_check_vsd fs/udf/super.c:772 [inline]
udf_load_vrs+0x394/0x1130 fs/udf/super.c:2006
udf_fill_super+0x5eb/0x1ed0 fs/udf/super.c:2192
get_tree_bdev+0x3f7/0x570 fs/super.c:1635
vfs_get_tree+0x90/0x2b0 fs/super.c:1800
do_new_mount+0x2be/0xb40 fs/namespace.c:3507
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4057 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13d9b7e719
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f13da8f9038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f13d9d35f80 RCX: 00007f13d9b7e719
RDX: 0000000020000080 RSI: 0000000020000140 RDI: 00000000200000c0
RBP: 00007f13d9bf132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000001000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f13d9d35f80 R15: 00007ffce3de01d8