watchdog: BUG: soft lockup - CPU#1 stuck for 144s! [syz.7.291:7036] Modules linked in: irq event stamp: 12702427 hardirqs last enabled at (12702426): [] irqentry_exit+0x63/0x90 kernel/entry/common.c:357 hardirqs last disabled at (12702427): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1049 softirqs last enabled at (12580948): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last enabled at (12580948): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last enabled at (12580948): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 softirqs last disabled at (12580951): [] __do_softirq kernel/softirq.c:595 [inline] softirqs last disabled at (12580951): [] invoke_softirq kernel/softirq.c:435 [inline] softirqs last disabled at (12580951): [] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 CPU: 1 UID: 0 PID: 7036 Comm: syz.7.291 Not tainted 6.14.0-rc1-syzkaller-g733c3faf0732 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:218 [inline] RIP: 0010:unwind_next_frame+0x1d9/0x22d0 arch/x86/kernel/unwind_orc.c:494 Code: 86 55 18 00 00 44 89 f0 48 8d 1c 85 d8 09 4c 91 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 4c 89 e5 0f 85 97 1a 00 00 44 8b 23 <44> 89 f0 ff c0 48 8d 1c 85 d8 09 4c 91 48 89 d8 48 c1 e8 03 0f b6 RSP: 0018:ffffc90000a182b0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff916ee044 RCX: 00000000000af99f RDX: 00000000000af99f RSI: ffffffff89b59be9 RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000005 R09: ffffc90000a18470 R10: ffffc90000a183d0 R11: ffffffff81ab1dc0 R12: 000000000016d467 R13: ffffc90000a18380 R14: 000000000008b59b R15: ffffffff89b59be8 FS: 00007f53374476c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000040000001b000 CR3: 0000000054f8a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x11c/0x150 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 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:576 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4609 [inline] kmem_cache_free+0x195/0x410 mm/slub.c:4711 skb_kfree_head net/core/skbuff.c:1084 [inline] skb_free_head net/core/skbuff.c:1098 [inline] skb_release_data+0x677/0x8a0 net/core/skbuff.c:1125 skb_release_all net/core/skbuff.c:1190 [inline] __kfree_skb net/core/skbuff.c:1204 [inline] sk_skb_reason_drop+0x1c9/0x380 net/core/skbuff.c:1242 hsr_forward_skb+0x1e66/0x2d50 send_hsr_supervision_frame+0x63f/0xd30 net/hsr/hsr_device.c:358 hsr_announce+0x1f8/0x3a0 net/hsr/hsr_device.c:415 call_timer_fn+0x187/0x650 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1840 [inline] __run_timers kernel/time/timer.c:2414 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2426 run_timer_base kernel/time/timer.c:2435 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2445 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_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0xa3/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:738 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:7086 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 05 b0 96 f5 e8 20 44 d0 f5 fb bf 01 00 00 00 25 ab ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 75 15 2f f6 48 RSP: 0018:ffffc90003367680 EFLAGS: 00000282 RAX: 7cd66dafa8f82100 RBX: 1ffff9200066ced8 RCX: ffffffff9a400903 RDX: dffffc0000000000 RSI: ffffffff8c0aa680 RDI: 0000000000000001 RBP: ffffc90003367730 R08: ffffffff901b5177 R09: 1ffffffff2036a2e R10: dffffc0000000000 R11: fffffbfff2036a2f R12: 1ffff9200066ced0 R13: 1ffff9200066ced4 R14: ffffc900033676a0 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:rep_movs_alternative+0x4a/0x70 arch/x86/lib/copy_user_64.S:71 Code: 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb c9 a4 c3 cc cc cc cc 48 89 c8 48 c1 e9 03 83 e0 07 f3 48 a5 89 c1 RSP: 0018:ffffc900033677f8 EFLAGS: 00050206 RAX: ffffffff84e65c01 RBX: ffff88806f180000 RCX: 00000000000191a0 RDX: 0000000000000001 RSI: 000040000001b000 RDI: ffff88806f19ae40 RBP: ffffc90003367970 R08: ffff88806f1b3fdf R09: 1ffff1100de367fb R10: dffffc0000000000 R11: ffffed100de367fc R12: ffffc90003367e28 R13: 1ffff9200066cfc3 R14: 0000000000033fe0 R15: 00004000000001c0 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline] raw_copy_from_user arch/x86/include/asm/uaccess_64.h:141 [inline] copy_from_user_iter lib/iov_iter.c:55 [inline] iterate_ubuf include/linux/iov_iter.h:30 [inline] iterate_and_advance2 include/linux/iov_iter.h:300 [inline] iterate_and_advance include/linux/iov_iter.h:328 [inline] __copy_from_iter lib/iov_iter.c:249 [inline] _copy_from_iter+0x268/0x1c20 lib/iov_iter.c:260 copy_from_iter include/linux/uio.h:228 [inline] copy_from_iter_full include/linux/uio.h:245 [inline] memcpy_from_msg include/linux/skbuff.h:4196 [inline] netlink_sendmsg+0x73d/0xcb0 net/netlink/af_netlink.c:1877 sock_sendmsg_nosec net/socket.c:713 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:728 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2568 ___sys_sendmsg net/socket.c:2622 [inline] __sys_sendmsg+0x269/0x350 net/socket.c:2654 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: 0033:0x7f533658cde9 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:00007f5337447038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f53367a5fa0 RCX: 00007f533658cde9 RDX: 0000000000000000 RSI: 0000400000000080 RDI: 0000000000000009 RBP: 00007f533660e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f53367a5fa0 R15: 00007ffe9bfa2b68 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 19 Comm: rcu_exp_gp_kthr Not tainted 6.14.0-rc1-syzkaller-g733c3faf0732 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:bpf_prog_run include/linux/filter.h:708 [inline] RIP: 0010:bpf_prog_run_array include/linux/bpf.h:2178 [inline] RIP: 0010:trace_call_bpf+0x35e/0x8a0 kernel/trace/bpf_trace.c:146 Code: 1f 44 00 00 e8 33 98 f4 ff 49 8d 5f 48 49 83 c7 30 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 25 2d 5b 00 4d 8b 1f <48> 8b 7c 24 28 48 89 de 41 ff d3 66 90 41 89 c5 4c 89 f0 48 c1 e8 RSP: 0018:ffffc900001876a0 EFLAGS: 00000046 RAX: 1ffff920007baa06 RBX: ffffc90003dd5048 RCX: ffff88801d683c00 RDX: 0000000000000000 RSI: 00000000000002ae RDI: ffffffff8e097161 RBP: ffffc90000187790 R08: ffffffff81cf0126 R09: 0000000000000000 R10: ffffc90000187720 R11: ffffffffa00053b4 R12: 0000000000000001 R13: dffffc0000000000 R14: ffff888033050240 R15: ffffc90003dd5030 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f85a2554020 CR3: 0000000070930000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_trace_run_bpf_submit+0x82/0x180 kernel/events/core.c:10509 do_perf_trace_preemptirq_template include/trace/events/preemptirq.h:14 [inline] perf_trace_preemptirq_template+0x2d2/0x3f0 include/trace/events/preemptirq.h:14 __do_trace_irq_disable include/trace/events/preemptirq.h:36 [inline] trace_irq_disable+0xf5/0x120 include/trace/events/preemptirq.h:36 irqentry_enter+0x39/0x60 kernel/entry/common.c:297 sysvec_apic_timer_interrupt+0xe/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_trylock_spinning kernel/printk/printk.c:2061 [inline] RIP: 0010:vprintk_emit+0x700/0xa10 kernel/printk/printk.c:2431 Code: 00 e8 24 d1 20 00 4c 8d bc 24 a0 00 00 00 4d 85 e4 75 07 e8 12 d1 20 00 eb 06 e8 0b d1 20 00 fb 49 bc 00 00 00 00 00 fc ff df <48> c7 c7 80 43 81 8e 31 f6 ba 01 00 00 00 31 c9 41 b8 01 00 00 00 RSP: 0018:ffffc900001879e0 EFLAGS: 00000293 RAX: ffffffff819e8a55 RBX: 0000000000000000 RCX: ffff88801d683c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000187af0 R08: ffffffff819e8a2e R09: 1ffffffff2036a2e R10: dffffc0000000000 R11: fffffbfff2036a2f R12: dffffc0000000000 R13: 1ffff92000030f40 R14: ffffffff819e8890 R15: ffffc90000187a80 _printk+0xd5/0x120 kernel/printk/printk.c:2457 synchronize_rcu_expedited_stall kernel/rcu/tree_exp.h:568 [inline] synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:666 [inline] rcu_exp_wait_wake kernel/rcu/tree_exp.h:685 [inline] rcu_exp_sel_wait_wake+0x8c1/0x1dc0 kernel/rcu/tree_exp.h:719 kthread_worker_fn+0x4f7/0xb70 kernel/kthread.c:1010 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244