audit: type=1804 audit(1619128792.560:2097): pid=19050 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir586535750/syzkaller.584EH2/70/bus" dev="sda1" ino=14270 res=1 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.5:19026] Modules linked in: irq event stamp: 3391831 hardirqs last enabled at (3391830): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3391831): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (5276): [] rcu_read_unlock_bh include/linux/rcupdate.h:717 [inline] softirqs last enabled at (5276): [] __dev_queue_xmit+0x15f5/0x2e00 net/core/dev.c:3865 softirqs last disabled at (5301): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (5301): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 19026 Comm: syz-executor.5 Not tainted 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mrp_queue_xmit net/802/mrp.c:353 [inline] RIP: 0010:mrp_join_timer+0x8a/0xc0 net/802/mrp.c:598 Code: 5c f9 d9 fa 4c 89 e7 48 81 c3 c8 00 00 00 e8 ed ca ff ff 4c 89 ef e8 15 7d 8f 01 eb 0d e8 3e f9 d9 fa 48 89 ef e8 d6 5e ed ff 31 f9 d9 fa 48 89 df e8 29 86 e6 ff 48 85 c0 48 89 c5 75 de e8 RSP: 0018:ffff8880ba007cf8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000101 RBX: ffff88803a45db18 RCX: 0000000000000000 RDX: 0000000000000004 RSI: 0000000000000004 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffed100748bb5c R10: ffff88803a45dae3 R11: 0000000000000000 R12: ffff88803a45da40 R13: ffff88803a45dae0 R14: ffff888042a74480 R15: 0000000000000000 FS: 00007f59edbe1700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e623000 CR3: 0000000098f23000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:535 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:unwind_next_frame+0x743/0x1400 arch/x86/kernel/unwind_orc.c:437 Code: 2c ff ff ff be 02 00 00 00 4c 89 ff 4c 89 44 24 30 48 89 4c 24 28 e8 cc 9a 6e 00 4c 8b 44 24 30 48 8b 4c 24 28 e9 06 ff ff ff <48> b8 00 00 00 00 00 fc ff df 48 8b 14 24 48 c1 ea 03 80 3c 02 00 RSP: 0018:ffff88801eabf400 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000005 RBX: 1ffff11003d57e89 RCX: ffffffff8b9094b7 RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8b9094b6 R09: ffffffff8b9094b2 R10: ffff88801eabf647 R11: 0000000000074071 R12: ffff88801eabf630 R13: ffff88801eabf61d R14: ffff88801eabf5e8 R15: ffffffff8b9094b2 __unwind_start+0x5b8/0x960 arch/x86/kernel/unwind_orc.c:667 unwind_start arch/x86/include/asm/unwind.h:60 [inline] __save_stack_trace+0x72/0x190 arch/x86/kernel/stacktrace.c:43 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 kmem_cache_alloc_node+0x146/0x3b0 mm/slab.c:3649 __alloc_skb+0x71/0x560 net/core/skbuff.c:193 alloc_skb include/linux/skbuff.h:995 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1190 [inline] netlink_sendmsg+0x9ee/0xc40 net/netlink/af_netlink.c:1884 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x3b3/0x8e0 net/socket.c:2115 __sys_sendmmsg+0x195/0x470 net/socket.c:2210 __do_sys_sendmmsg net/socket.c:2239 [inline] __se_sys_sendmmsg net/socket.c:2236 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2236 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f59edbe1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 010efe10675dec16 RSI: 0000000020000200 RDI: 0000000000000005 RBP: 00000000004bfb23 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007fff89fba86f R14: 00007f59edbe1300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 19037 Comm: syz-executor.5 Not tainted 4.19.188-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:write_comp_data+0x3/0x70 kernel/kcov.c:116 Code: 88 68 13 00 00 8b 80 64 13 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 00 00 00 49 89 f1 <49> 89 fa 65 48 8b 34 25 80 df 01 00 65 8b 05 ea 80 9f 7e a9 00 01 RSP: 0018:ffff88804aa67658 EFLAGS: 00000202 RAX: ffff888042cb8040 RBX: 1ffff1100954ced0 RCX: ffffffff81585d0e RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff88804aa67740 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: ffff8880109080fc FS: 00007f59edbc0700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff36eb00718 CR3: 00000000a3b9d000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x1ee/0x420 kernel/smp.c:302 task_function_call+0xe0/0x170 kernel/events/core.c:115 event_function_call+0x228/0x430 kernel/events/core.c:283 perf_remove_from_context+0x9b/0x1c0 kernel/events/core.c:2112 perf_event_release_kernel+0x169/0xcd0 kernel/events/core.c:4583 perf_release+0x33/0x40 kernel/events/core.c:4679 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xbf3/0x2be0 kernel/exit.c:870 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f59edbc0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000056c010 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000056c010 RBP: 000000000056c008 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c014 R13: 00007fff89fba86f R14: 00007f59edbc0300 R15: 0000000000022000