syzkaller syzkaller login: [ 5.808765][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! [ 13.509042][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! [ 13.651692][ T24] kauditd_printk_skb: 60 callbacks suppressed [ 13.651698][ T24] audit: type=1400 audit(1663905380.130:71): avc: denied { transition } for pid=289 comm="sshd" path="/bin/sh" dev="sda1" ino=73 scontext=system_u:system_r:initrc_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 13.685115][ T24] audit: type=1400 audit(1663905380.160:72): avc: denied { write } for pid=289 comm="sh" path="pipe:[346]" dev="pipefs" ino=346 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:initrc_t tclass=fifo_file permissive=1 [ 13.707486][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! [ 14.978689][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #80!!! Warning: Permanently added '10.128.0.156' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 25.343265][ T24] audit: type=1400 audit(1663905391.820:73): avc: denied { execmem } for pid=365 comm="syz-executor350" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 25.434894][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #10!!! [ 25.446121][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #10!!! [ 25.459235][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #10!!! [ 25.536195][ T79] ------------[ cut here ]------------ [ 25.542267][ T79] WARNING: CPU: 1 PID: 79 at drivers/scsi/scsi_lib.c:1016 scsi_alloc_sgtables+0x766/0x950 [ 25.552230][ T79] Modules linked in: [ 25.556224][ T79] CPU: 1 PID: 79 Comm: kworker/1:1H Not tainted 5.10.142-syzkaller-00950-g51659937e310 #0 [ 25.567468][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 25.578184][ T79] Workqueue: kblockd blk_mq_requeue_work write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 25.583875][ T79] RIP: 0010:scsi_alloc_sgtables+0x766/0x950 [ 25.589799][ T79] Code: 48 8b 0c 25 28 00 00 00 48 3b 8c 24 a0 00 00 00 0f 85 f0 01 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 3a 24 92 fe <0f> 0b b0 0a eb be e8 2f 24 92 fe b0 09 4c 8b 6c 24 40 eb b0 44 89 [ 25.610840][ T79] RSP: 0000:ffffc9000032f420 EFLAGS: 00010293 [ 25.617173][ T79] RAX: ffffffff82dac666 RBX: 0000000000000000 RCX: ffff8881055a3b40 [ 25.625803][ T79] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [ 25.633815][ T79] RBP: ffffc9000032f518 R08: ffffffff82dac17d R09: ffffffff82e4df5b [ 25.642288][ T79] R10: 000000000000000c R11: ffff8881055a3b40 R12: ffff88810a949e70 [ 25.650290][ T79] R13: 1ffff92000065e90 R14: dffffc0000000000 R15: 0000000000000000 [ 25.658267][ T79] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.667209][ T79] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.673826][ T79] CR2: 0000000020000148 CR3: 00000001075a2000 CR4: 00000000003506a0 [ 25.681826][ T79] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.689819][ T79] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.697782][ T79] Call Trace: [ 25.701100][ T79] ? scsi_io_completion_action+0x10a0/0x10a0 [ 25.707091][ T79] ? vp_notify+0x59/0x80 [ 25.711388][ T79] sd_init_command+0xab9/0x2170 [ 25.716225][ T79] ? scsi_init_command+0x44d/0x540 [ 25.721349][ T79] scsi_queue_rq+0x1744/0x2120 [ 25.726117][ T79] blk_mq_dispatch_rq_list+0x9bf/0x1800 [ 25.731696][ T79] ? cpumask_next+0x11/0x30 [ 25.736199][ T79] ? __dd_dispatch_request+0x820/0xa80 [ 25.741681][ T79] ? blk_mq_dequeue_from_ctx+0x920/0x920 [ 25.747319][ T79] blk_mq_do_dispatch_sched+0x63c/0xc60 [ 25.752898][ T79] ? blk_mq_exit_sched+0x410/0x410 [ 25.758012][ T79] ? _raw_spin_lock+0xa3/0x1b0 [ 25.762803][ T79] ? _raw_spin_trylock_bh+0x1d0/0x1d0 [ 25.768190][ T79] ? __kasan_check_write+0x14/0x20 [ 25.773374][ T79] __blk_mq_sched_dispatch_requests+0x3de/0x4d0 [ 25.779642][ T79] ? _raw_spin_lock+0xa3/0x1b0 [ 25.784605][ T79] ? _raw_spin_trylock_bh+0x1d0/0x1d0 [ 25.790000][ T79] ? blk_mq_sched_dispatch_requests+0x160/0x160 [ 25.796250][ T79] blk_mq_sched_dispatch_requests+0xf0/0x160 [ 25.802245][ T79] __blk_mq_run_hw_queue+0x14d/0x260 [ 25.807528][ T79] __blk_mq_delay_run_hw_queue+0x22a/0x570 [ 25.813352][ T79] blk_mq_run_hw_queue+0x29d/0x3b0 [ 25.818454][ T79] blk_mq_run_hw_queues+0x37c/0x450 [ 25.823665][ T79] blk_mq_requeue_work+0x73b/0x780 [ 25.828810][ T79] ? blk_mq_timeout_work+0x490/0x490 [ 25.834076][ T79] ? __kasan_check_read+0x11/0x20 [ 25.839127][ T79] ? strscpy+0xa8/0x270 [ 25.843306][ T79] process_one_work+0x726/0xc10 [ 25.848135][ T79] worker_thread+0xb27/0x1550 [ 25.852855][ T79] ? __kthread_parkme+0xba/0x1d0 [ 25.857795][ T79] kthread+0x349/0x3d0 [ 25.861872][ T79] ? worker_clr_flags+0x180/0x180 [ 25.866890][ T79] ? kthread_blkcg+0xd0/0xd0 [ 25.871490][ T79] ret_from_fork+0x1f/0x30 [ 25.875898][ T79] ---[ end trace 7e57a0a2266768a3 ]--- [ 25.881370][ T79] blk_update_request: I/O error, dev sda, sector 598512 op 0x1:(WRITE) flags 0xc800 phys_seg 0 prio class 0 [ 25.892892][ T79] ------------[ cut here ]------------ [ 25.898324][ T79] kernel BUG at block/blk-mq.c:569! [ 25.903533][ T79] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 25.909594][ T79] CPU: 1 PID: 79 Comm: kworker/1:1H Tainted: G W 5.10.142-syzkaller-00950-g51659937e310 #0 [ 25.920840][ T79] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 25.930886][ T79] Workqueue: kblockd blk_mq_requeue_work [ 25.936525][ T79] RIP: 0010:blk_mq_dispatch_rq_list+0x17ef/0x1800 [ 25.942927][ T79] Code: 68 ff e9 63 f5 ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 83 f6 ff ff 4c 89 ef e8 bb a5 68 ff e9 76 f6 ff ff e8 41 96 2e ff <0f> 0b e8 8a 4d 54 02 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 [ 25.962615][ T79] RSP: 0000:ffffc9000032f6e0 EFLAGS: 00010293 [ 25.968658][ T79] RAX: ffffffff823e545f RBX: ffff88810a949d40 RCX: ffff8881055a3b40 [ 25.976605][ T79] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88810a949e0a [ 25.984553][ T79] RBP: ffffc9000032f870 R08: ffffffff823d253f R09: ffffffff823d24d5 [ 25.992499][ T79] R10: 0000000000000004 R11: ffff8881055a3b40 R12: dffffc0000000000 [ 26.000445][ T79] R13: ffffc9000032f960 R14: ffffc9000032f800 R15: ffff888109402800 [ 26.008425][ T79] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.017329][ T79] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.023890][ T79] CR2: 0000000020000148 CR3: 00000001075a2000 CR4: 00000000003506a0 [ 26.031909][ T79] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.039857][ T79] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.047801][ T79] Call Trace: [ 26.051071][ T79] ? cpumask_next+0x11/0x30 [ 26.055550][ T79] ? __dd_dispatch_request+0x820/0xa80 [ 26.060988][ T79] ? blk_mq_dequeue_from_ctx+0x920/0x920 [ 26.066614][ T79] blk_mq_do_dispatch_sched+0x63c/0xc60 [ 26.072243][ T79] ? blk_mq_exit_sched+0x410/0x410 [ 26.077326][ T79] ? _raw_spin_lock+0xa3/0x1b0 [ 26.082174][ T79] ? _raw_spin_trylock_bh+0x1d0/0x1d0 [ 26.087543][ T79] ? __kasan_check_write+0x14/0x20 [ 26.092640][ T79] __blk_mq_sched_dispatch_requests+0x3de/0x4d0 [ 26.098858][ T79] ? _raw_spin_lock+0xa3/0x1b0 [ 26.103619][ T79] ? _raw_spin_trylock_bh+0x1d0/0x1d0 [ 26.108967][ T79] ? blk_mq_sched_dispatch_requests+0x160/0x160 [ 26.115182][ T79] blk_mq_sched_dispatch_requests+0xf0/0x160 [ 26.121134][ T79] __blk_mq_run_hw_queue+0x14d/0x260 [ 26.126393][ T79] __blk_mq_delay_run_hw_queue+0x22a/0x570 [ 26.132178][ T79] blk_mq_run_hw_queue+0x29d/0x3b0 [ 26.137261][ T79] blk_mq_run_hw_queues+0x37c/0x450 [ 26.142433][ T79] blk_mq_requeue_work+0x73b/0x780 [ 26.147515][ T79] ? blk_mq_timeout_work+0x490/0x490 [ 26.152786][ T79] ? __kasan_check_read+0x11/0x20 [ 26.157814][ T79] ? strscpy+0xa8/0x270 [ 26.161948][ T79] process_one_work+0x726/0xc10 [ 26.167149][ T79] worker_thread+0xb27/0x1550 [ 26.171804][ T79] ? __kthread_parkme+0xba/0x1d0 [ 26.176717][ T79] kthread+0x349/0x3d0 [ 26.180765][ T79] ? worker_clr_flags+0x180/0x180 [ 26.185761][ T79] ? kthread_blkcg+0xd0/0xd0 [ 26.190340][ T79] ret_from_fork+0x1f/0x30 [ 26.194748][ T79] Modules linked in: [ 26.198679][ T79] ---[ end trace 7e57a0a2266768a4 ]--- [ 26.204227][ T79] RIP: 0010:blk_mq_dispatch_rq_list+0x17ef/0x1800 [ 26.210662][ T79] Code: 68 ff e9 63 f5 ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 83 f6 ff ff 4c 89 ef e8 bb a5 68 ff e9 76 f6 ff ff e8 41 96 2e ff <0f> 0b e8 8a 4d 54 02 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 [ 26.230289][ T79] RSP: 0000:ffffc9000032f6e0 EFLAGS: 00010293 [ 26.236343][ T79] RAX: ffffffff823e545f RBX: ffff88810a949d40 RCX: ffff8881055a3b40 [ 26.244328][ T79] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88810a949e0a [ 26.252325][ T79] RBP: ffffc9000032f870 R08: ffffffff823d253f R09: ffffffff823d24d5 [ 26.260325][ T79] R10: 0000000000000004 R11: ffff8881055a3b40 R12: dffffc0000000000 [ 26.268600][ T79] R13: ffffc9000032f960 R14: ffffc9000032f800 R15: ffff888109402800 [ 26.276564][ T79] FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.285509][ T79] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.292098][ T79] CR2: 0000000020000148 CR3: 00000001075a2000 CR4: 00000000003506a0 [ 26.300088][ T79] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.308069][ T79] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.316069][ T79] Kernel panic - not syncing: Fatal exception [ 26.322337][ T79] Kernel Offset: disabled [ 26.326642][ T79] Rebooting in 86400 seconds..