rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1 GPs behind) idle=f0bc/1/0x4000000000000000 softirq=24007/24008 fqs=5247 rcu: hardirqs softirqs csw/system rcu: number: 10 0 0 rcu: cputime: 146 52353 2 ==> 52510(ms) rcu: (t=10502 jiffies g=18817 q=1206 ncpus=2) CPU: 1 UID: 0 PID: 5834 Comm: syz-executor Not tainted 6.13.0-rc3-syzkaller-00154-g30b981796b94 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:taprio_dequeue_tc_priority+0x2e2/0x7a0 net/sched/sch_taprio.c:797 Code: f7 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 84 c0 0f 85 22 01 00 00 8b 44 24 0c 41 39 45 00 48 8b 6c 24 60 4c 8b 7c 24 58 <0f> 84 74 03 00 00 e8 23 f7 d1 f7 41 83 fe 10 0f 82 84 fe ff ff e9 RSP: 0018:ffffc90000a18240 EFLAGS: 00000206 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888034b8da00 RDX: 0000000000000100 RSI: 0000000000000010 RDI: 000000000000000a RBP: ffff8880349bc044 R08: ffffffff89cd7c4e R09: 1ffffffff2854910 R10: dffffc0000000000 R11: ffffffff89bf7200 R12: dffffc0000000000 R13: ffff888058bb4394 R14: 0000000000000001 R15: ffff8880349bc042 FS: 000055558d650500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f27e0a3aaa0 CR3: 000000005fd9c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: taprio_dequeue+0x186/0x550 dequeue_skb net/sched/sch_generic.c:293 [inline] qdisc_restart net/sched/sch_generic.c:398 [inline] __qdisc_run+0x272/0x2180 net/sched/sch_generic.c:416 __dev_xmit_skb net/core/dev.c:3896 [inline] __dev_queue_xmit+0x10dd/0x3f50 net/core/dev.c:4400 neigh_output include/net/neighbour.h:539 [inline] ip6_finish_output2+0x12c7/0x17b0 net/ipv6/ip6_output.c:141 ip6_finish_output+0x41e/0x840 net/ipv6/ip6_output.c:226 NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xb30/0x1450 net/ipv6/ndisc.c:511 addrconf_rs_timer+0x371/0x670 net/ipv6/addrconf.c:4061 call_timer_fn+0x187/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:find_stack lib/stackdepot.c:552 [inline] RIP: 0010:stack_depot_save_flags+0x16e/0x940 lib/stackdepot.c:618 Code: de c1 c3 18 41 29 de 48 8b 05 be 1e 73 15 8b 0d b0 1e 73 15 44 21 f1 48 c1 e1 04 48 8d 14 08 65 ff 05 de 96 09 7b 4c 8b 3c 08 <49> 39 d7 8b 5c 24 04 0f 84 95 00 00 00 45 89 cd eb 34 90 0f 0b 90 RSP: 0018:ffffc9000415f630 EFLAGS: 00000282 RAX: ffff88823ae00000 RBX: 00000000066738ab RCX: 0000000000b0db80 RDX: ffff88823b90db80 RSI: 0000000000000003 RDI: 000000001210cf8e RBP: 000000002f599156 R08: ffffc9000415f6a0 R09: 000000000000000c R10: dffffc0000000000 R11: fffffbfff2032f87 R12: 0000000000000d40 R13: 0000000000000017 R14: 00000000aeeb0db8 R15: ffff88807e9186e0 kasan_save_stack mm/kasan/common.c:48 [inline] kasan_save_track+0x51/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:377 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:394 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4298 [inline] __kmalloc_noprof+0x285/0x4c0 mm/slub.c:4310 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] tomoyo_encode2 security/tomoyo/realpath.c:45 [inline] tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x236/0x860 security/tomoyo/file.c:723 tomoyo_path_mkdir+0xe7/0x130 security/tomoyo/tomoyo.c:179 security_path_mkdir+0x171/0x370 security/security.c:1927 do_mkdirat+0x1c4/0x3a0 fs/namei.c:4331 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4347 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: 0033:0x7f6f9c784597 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 02 01 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:00007ffd3d166c68 EFLAGS: 00000202 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007ffd3d166cb0 RCX: 00007f6f9c784597 RDX: 00000000000001ff RSI: 00007ffd3d166cb0 RDI: 00000000ffffff9c RBP: 00007ffd3d166c9c R08: 0000000000000005 R09: 00007ffd3d166a05 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000032 R13: 000000000001f875 R14: 00007ffd3d166cf0 R15: 00000000000000b6 sched: DL replenish lagged too much