watchdog: BUG: soft lockup - CPU#0 stuck for 143s! [syz-executor.1:5305] CPU#0 Utilization every 22s during lockup: #1: 1% system, 7% softirq, 94% hardirq, 0% idle #2: 0% system, 7% softirq, 94% hardirq, 0% idle #3: 0% system, 7% softirq, 94% hardirq, 0% idle #4: 1% system, 7% softirq, 95% hardirq, 0% idle #5: 0% system, 6% softirq, 95% hardirq, 0% idle CPU#0 Detect HardIRQ Time exceeds 50%. Most frequent HardIRQs: #1: 7 irq#35 #2: 1 irq#36 Modules linked in: irq event stamp: 12909177 hardirqs last enabled at (12909176): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (12909177): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1043 softirqs last enabled at (200782): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last enabled at (200782): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last enabled at (200782): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 softirqs last disabled at (200785): [] __do_softirq kernel/softirq.c:588 [inline] softirqs last disabled at (200785): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (200785): [] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 CPU: 0 PID: 5305 Comm: syz-executor.1 Not tainted 6.10.0-rc1-syzkaller-g2884dc7d08d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:56 [inline] RIP: 0010:unwind_next_frame+0x1db9/0x2a00 arch/x86/kernel/unwind_orc.c:665 Code: 0a 48 8b 7c 24 50 e8 f6 db ba 00 4c 8b 65 38 48 8d 7d 08 48 89 f8 48 c1 e8 03 42 80 3c 28 00 74 05 e8 db db ba 00 4c 8b 75 08 <48> 8d 5d 10 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 RSP: 0018:ffffc90000007468 EFLAGS: 00000246 RAX: 1ffff92000000ea9 RBX: 0000000000000002 RCX: ffff888027f71e00 RDX: ffff888027f71e00 RSI: 0000000000000002 RDI: ffffc90000007548 RBP: ffffc90000007540 R08: ffffffff8140fcdb R09: ffffffff8140f8cf R10: 0000000000000003 R11: ffff888027f71e00 R12: ffffc90000007ff8 R13: dffffc0000000000 R14: ffffc90000000000 R15: 1ffff92000000ea8 FS: 00007f43930d56c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002380 CR3: 000000001ef28000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3940 [inline] slab_alloc_node mm/slub.c:4000 [inline] kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4043 __alloc_skb+0x1c3/0x440 net/core/skbuff.c:656 alloc_skb include/linux/skbuff.h:1308 [inline] new_skb drivers/block/aoe/aoecmd.c:66 [inline] aoecmd_cfg_pkts drivers/block/aoe/aoecmd.c:427 [inline] aoecmd_cfg+0x2d3/0xa30 drivers/block/aoe/aoecmd.c:1362 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers kernel/time/timer.c:2417 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2428 run_timer_base kernel/time/timer.c:2437 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2447 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_is_held_type+0x142/0x190 kernel/locking/lockdep.c:5830 Code: 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 42 <89> d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 RSP: 0018:ffffc9000449f258 EFLAGS: 00000246 RAX: 52771517e00d3200 RBX: 0000000000000000 RCX: ffff888027f71e00 RDX: 0000000000000000 RSI: ffffffff8bcacc00 RDI: ffffffff8c1ff240 RBP: 0000000000000002 R08: ffffc9000449f41f R09: 0000000000000000 R10: ffffc9000449f410 R11: fffff52000893e84 R12: 0000000000000246 R13: ffff888027f71e00 R14: 00000000ffffffff R15: ffffffff8e333fc0 lock_is_held include/linux/lockdep.h:231 [inline] schedule_debug kernel/sched/core.c:5981 [inline] __schedule+0x209/0x4a20 kernel/sched/core.c:6628 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6924 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6948 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 unwind_next_frame+0x2124/0x2a00 arch/x86/kernel/unwind_orc.c:672 __unwind_start+0x641/0x7c0 arch/x86/kernel/unwind_orc.c:760 unwind_start arch/x86/include/asm/unwind.h:64 [inline] arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3940 [inline] slab_alloc_node mm/slub.c:4000 [inline] kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4019 __d_alloc+0x31/0x700 fs/dcache.c:1624 d_alloc_pseudo+0x1f/0xb0 fs/dcache.c:1756 alloc_path_pseudo fs/file_table.c:330 [inline] alloc_file_pseudo+0x123/0x290 fs/file_table.c:346 __anon_inode_getfile fs/anon_inodes.c:109 [inline] anon_inode_getfile+0xc8/0x180 fs/anon_inodes.c:147 __do_sys_perf_event_open kernel/events/core.c:12719 [inline] __se_sys_perf_event_open+0x25e5/0x38d0 kernel/events/core.c:12431 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: 0033:0x7f439227cf69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f43930d50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f43923b3fa0 RCX: 00007f439227cf69 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000540 RBP: 00007f43922da706 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f43923b3fa0 R15: 00007fffc5f988b8 Sending NMI from CPU 0 to CPUs 1: handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 NMI backtrace for cpu 1 CPU: 1 PID: 5303 Comm: syz-executor.0 Not tainted 6.10.0-rc1-syzkaller-g2884dc7d08d9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:serial8250_console_write+0xc1/0x1770 drivers/tty/serial/8250/8250_port.c:3341 Code: 21 15 f3 f3 48 89 8c 24 b8 00 00 00 42 c6 44 21 17 f3 e8 c2 f9 59 fc 49 8d 9f f8 02 00 00 48 89 d8 48 c1 e8 03 42 80 3c 20 00 <74> 08 48 89 df e8 15 bc bf fc 4c 8b 33 e8 0d 2f 5a fc e8 18 3b 5a RSP: 0018:ffffc90000a18280 EFLAGS: 00000046 RAX: 1ffffffff2959c97 RBX: ffffffff94ace4b8 RCX: ffff88802f675a00 RDX: 0000000000000104 RSI: ffffffff947e0920 RDI: ffffffff94ace1c0 RBP: ffffc90000a18450 R08: ffffffff853b3123 R09: 1ffffffff25f50b0 R10: dffffc0000000000 R11: ffffffff853b30e0 R12: dffffc0000000000 R13: ffffffff8eb22720 R14: ffffffff853b30e0 R15: ffffffff94ace1c0 FS: 00007fd9279fe6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b28501743 CR3: 000000001eeaa000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: console_emit_next_record kernel/printk/printk.c:2928 [inline] console_flush_all+0x865/0xfd0 kernel/printk/printk.c:2994 console_unlock+0x13b/0x4d0 kernel/printk/printk.c:3063 vprintk_emit+0x5a6/0x770 kernel/printk/printk.c:2345 _printk+0xd5/0x120 kernel/printk/printk.c:2370 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline] show_trace_log_lvl+0x43a/0x520 arch/x86/kernel/dumpstack.c:285 __warn+0x163/0x4e0 kernel/panic.c:691 __report_bug lib/bug.c:199 [inline] report_bug+0x2b3/0x500 lib/bug.c:219 handle_bug+0x3e/0x70 arch/x86/kernel/traps.c:239 exc_invalid_op+0x1a/0x50 arch/x86/kernel/traps.c:260 asm_exc_invalid_op+0x1a/0x20 arch/x86/include/asm/idtentry.h:621 RIP: 0010:rcu_check_gp_start_stall+0x2cf/0x460 kernel/rcu/tree_stall.h:993 Code: c7 c0 29 7e 94 be 04 00 00 00 e8 ec ed 7e 00 b8 01 00 00 00 87 05 11 3c 01 13 85 c0 0f 85 1a ff ff ff 48 c7 c0 c0 8b 33 8e 90 <0f> 0b 90 49 39 c7 74 47 48 c7 c0 6c 77 ad 8f 48 c1 e8 03 42 0f b6 RSP: 0018:ffffc90000a18bd8 EFLAGS: 00010046 RAX: ffffffff8e338bc0 RBX: 00000000ffffcd69 RCX: ffffffff817ceda4 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff947e29c0 RBP: ffffc90000a18e30 R08: 0000000000000003 R09: fffffbfff28fc538 R10: dffffc0000000000 R11: fffffbfff28fc538 R12: dffffc0000000000 R13: ffff8880b953f6c0 R14: 0000000000000246 R15: ffffffff8e338bc0 rcu_core+0x694/0x1830 kernel/rcu/tree.c:2804 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_pc+0x58/0x70 kernel/kcov.c:223 Code: 00 74 2c 8b 91 f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a <48> 89 44 f2 08 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f RSP: 0018:ffffc9000451ef60 EFLAGS: 00000283 RAX: ffffffff8140e4ae RBX: ffffffff8fc598a0 RCX: 0000000000040000 RDX: ffffc9000a444000 RSI: 00000000000011f6 RDI: 00000000000011f7 RBP: ffffffff81fb9eaf R08: ffffffff8140e470 R09: ffffc9000451f130 R10: 0000000000000003 R11: ffffffff8181cfd0 R12: ffffffff8fc5989c R13: ffffffff8fc598a0 R14: ffffffff81fb9e7e R15: ffffffff8fc5989c __orc_find arch/x86/kernel/unwind_orc.c:99 [inline] orc_find arch/x86/kernel/unwind_orc.c:227 [inline] unwind_next_frame+0x54e/0x2a00 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4121 [inline] __kmalloc_noprof+0x1f9/0x400 mm/slub.c:4134 kmalloc_noprof include/linux/slab.h:664 [inline] kzalloc_noprof include/linux/slab.h:778 [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+0x23a/0x880 security/tomoyo/file.c:723 tomoyo_path_mknod+0x176/0x1b0 security/tomoyo/tomoyo.c:252 security_path_mknod+0xf8/0x150 security/security.c:1791 may_o_create fs/namei.c:3327 [inline] lookup_open fs/namei.c:3468 [inline] open_last_lookups fs/namei.c:3574 [inline] path_openat+0xc7c/0x3280 fs/namei.c:3804 do_filp_open+0x235/0x490 fs/namei.c:3834 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405 do_sys_open fs/open.c:1420 [inline] __do_sys_openat fs/open.c:1436 [inline] __se_sys_openat fs/open.c:1431 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1431 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: 0033:0x7fd926c7cf69 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd9279fe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fd926db3fa0 RCX: 00007fd926c7cf69 RDX: 00000000000026e1 RSI: 0000000020000340 RDI: ffffffffffffff9c RBP: 00007fd926cda706 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fd926db3fa0 R15: 00007ffe03cda228