syzbot


INFO: rcu detected stall in sys_bind (2)

Status: closed as invalid on 2022/02/08 10:10
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 355d, last: 355d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in sys_bind 1 1396d 1396d 12/24 fixed on 2019/03/06 07:43
linux-4.19 BUG: soft lockup in sys_bind 1 327d 327d 0/1 auto-closed as invalid on 2022/05/12 15:23

Sample crash report:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=703/1/0x4000000000000000 softirq=64665/64666 fqs=1 
	(detected by 0, t=10502 jiffies, g=84357, q=76)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20884 Comm: syz-executor.4 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:match_held_lock+0xe/0xc0 kernel/locking/lockdep.c:5089
Code: 48 c7 c7 c0 0e ac 89 e8 90 24 bd ff e8 b0 e7 cc ff 31 c0 5d c3 0f 1f 80 00 00 00 00 53 48 89 fb 48 83 ec 08 48 39 77 10 74 6a <66> f7 47 22 f0 ff 74 5a 48 8b 46 08 48 89 f7 48 85 c0 74 42 8b 15
RSP: 0018:ffffc90000dc0c10 EFLAGS: 00000087
RAX: 0000000000000005 RBX: ffff88801be7a788 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8bb83da0 RDI: ffff88801be7a788
RBP: ffffffff8bb83da0 R08: 0000000000000000 R09: ffffffff8d9135d7
R10: fffffbfff1b226ba R11: 0000000000000000 R12: ffff88801be79d00
R13: ffff88801be7a760 R14: 00000000ffffffff R15: ffff88801be7a788
FS:  00007f42c3c2e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f42c53cd090 CR3: 000000007eec7000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 __lock_is_held kernel/locking/lockdep.c:5380 [inline]
 lock_is_held_type+0xa7/0x140 kernel/locking/lockdep.c:5680
 lock_is_held include/linux/lockdep.h:283 [inline]
 rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
 trace_lock_release include/trace/events/lock.h:58 [inline]
 lock_release+0x522/0x720 kernel/locking/lockdep.c:5648
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x16/0x70 kernel/locking/spinlock.c:194
 debug_object_deactivate lib/debugobjects.c:757 [inline]
 debug_object_deactivate+0x264/0x300 lib/debugobjects.c:723
 debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
 debug_deactivate kernel/time/hrtimer.c:481 [inline]
 __run_hrtimer kernel/time/hrtimer.c:1653 [inline]
 __hrtimer_run_queues+0x3f8/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 b1 22 46 00 5d be 03 00 00 00 e9 56 36 63 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 99 c4 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc90002d3fa48 EFLAGS: 00000216
RAX: 0000000000003af1 RBX: 0000000000000000 RCX: ffffc9000bd4c000
RDX: 0000000000040000 RSI: ffffffff815ee7ec RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff74a07
R10: ffffffff815ee7e2 R11: 0000000000000000 R12: ffffffff84d43c80
R13: 0000000000000200 R14: ffffc90002d3faa8 R15: dffffc0000000000
 console_unlock+0x6c2/0xb70 kernel/printk/printk.c:2716
 vprintk_emit+0x198/0x4f0 kernel/printk/printk.c:2245
 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
 _printk+0xba/0xed kernel/printk/printk.c:2266
 crypto_arc4_init crypto/arc4.c:46 [inline]
 crypto_arc4_init.cold+0x54/0x60 crypto/arc4.c:44
 crypto_skcipher_init_tfm+0x127/0x180 crypto/skcipher.c:672
 crypto_create_tfm_node+0x10d/0x330 crypto/api.c:497
 crypto_alloc_tfm_node+0x107/0x260 crypto/api.c:573
 alg_bind+0x260/0x500 crypto/af_alg.c:181
 __sys_bind+0x1e9/0x250 net/socket.c:1693
 __do_sys_bind net/socket.c:1704 [inline]
 __se_sys_bind net/socket.c:1702 [inline]
 __x64_sys_bind+0x6f/0xb0 net/socket.c:1702
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f42c52b8e99
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:00007f42c3c2e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00007f42c53cbf60 RCX: 00007f42c52b8e99
RDX: 0000000000000058 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007f42c5312ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc76e381df R14: 00007f42c3c2e300 R15: 0000000000022000
 </TASK>
rcu: rcu_preempt kthread starved for 10500 jiffies! g84357 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:28688 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4972 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6253
 schedule+0xd2/0x260 kernel/sched/core.c:6326
 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 20886 Comm: syz-executor.1 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:481
 print_other_cpu_stall kernel/rcu/tree_stall.h:586 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:729 [inline]
 rcu_pending kernel/rcu/tree.c:3878 [inline]
 rcu_sched_clock_irq+0x2125/0x2200 kernel/rcu/tree.c:2597
 update_process_times+0x16d/0x200 kernel/time/timer.c:1785
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1428
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x476/0xc20 kernel/smp.c:969
Code: 80 75 0b 00 f3 90 41 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 33 06 00 00 8b 43 08 31 ff 83 e0 01 41 89 c7 89 c6 e8 7a 77 0b 00 <45> 85 ff 75 d0 e8 50 75 0b 00 e9 e1 fe ff ff 48 83 c4 70 5b 5d 41
RSP: 0018:ffffc90002da79f0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff8880b9d3fca0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff88801ae93a00 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816c3606 R11: 0000000000000000 R12: ffffed10173a7f95
R13: 0000000000000001 R14: ffff8880b9d3fca8 R15: 0000000000000001
 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1135
 kill_bdev block/bdev.c:77 [inline]
 set_blocksize+0x2b3/0x370 block/bdev.c:158
 sb_set_blocksize block/bdev.c:167 [inline]
 sb_min_blocksize+0xc8/0x1c0 block/bdev.c:183
 fat_fill_super+0x2dc/0x36e0 fs/fat/inode.c:1646
 mount_bdev+0x34d/0x410 fs/super.c:1370
 legacy_get_tree+0x105/0x220 fs/fs_context.c:610
 vfs_get_tree+0x89/0x2f0 fs/super.c:1500
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x1320/0x1fa0 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount fs/namespace.c:3516 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3ea35f73ca
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f3ea1f6af88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000240 RCX: 00007f3ea35f73ca
RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007f3ea1f6afe0
RBP: 00007f3ea1f6b020 R08: 00007f3ea1f6b020 R09: 0000000020000040
R10: 0000000003014014 R11: 0000000000000206 R12: 0000000020000040
R13: 0000000020000100 R14: 00007f3ea1f6afe0 R15: 0000000020000180
 </TASK>
watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz-executor.1:20886]
Modules linked in:
irq event stamp: 50302
hardirqs last  enabled at (50301): [<ffffffff89600c02>] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
hardirqs last disabled at (50302): [<ffffffff894455cb>] sysvec_apic_timer_interrupt+0xb/0xc0 arch/x86/kernel/apic/apic.c:1097
softirqs last  enabled at (1138): [<ffffffff8146b9d3>] invoke_softirq kernel/softirq.c:432 [inline]
softirqs last  enabled at (1138): [<ffffffff8146b9d3>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
softirqs last disabled at (1041): [<ffffffff8146b9d3>] invoke_softirq kernel/softirq.c:432 [inline]
softirqs last disabled at (1041): [<ffffffff8146b9d3>] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:637
CPU: 0 PID: 20886 Comm: syz-executor.1 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x452/0xc20 kernel/smp.c:969
Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 80 75 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 33 06 00 00 8b 43 08 31
RSP: 0018:ffffc90002da79f0 EFLAGS: 00000246
RAX: 0000000000040000 RBX: ffff8880b9d3fca0 RCX: ffffc9000f392000
RDX: 0000000000040000 RSI: ffffffff816c35e0 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff816c3606 R11: 0000000000000000 R12: ffffed10173a7f95
R13: 0000000000000001 R14: ffff8880b9d3fca8 R15: 0000000000000001
FS:  00007f3ea1f6b700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ea1f6c000 CR3: 000000007a6ee000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x56/0xa0 kernel/smp.c:1135
 kill_bdev block/bdev.c:77 [inline]
 set_blocksize+0x2b3/0x370 block/bdev.c:158
 sb_set_blocksize block/bdev.c:167 [inline]
 sb_min_blocksize+0xc8/0x1c0 block/bdev.c:183
 fat_fill_super+0x2dc/0x36e0 fs/fat/inode.c:1646
 mount_bdev+0x34d/0x410 fs/super.c:1370
 legacy_get_tree+0x105/0x220 fs/fs_context.c:610
 vfs_get_tree+0x89/0x2f0 fs/super.c:1500
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x1320/0x1fa0 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount fs/namespace.c:3516 [inline]
 __x64_sys_mount+0x27f/0x300 fs/namespace.c:3516
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3ea35f73ca
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f3ea1f6af88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000240 RCX: 00007f3ea35f73ca
RDX: 0000000020000040 RSI: 0000000020000100 RDI: 00007f3ea1f6afe0
RBP: 00007f3ea1f6b020 R08: 00007f3ea1f6b020 R09: 0000000020000040
R10: 0000000003014014 R11: 0000000000000206 R12: 0000000020000040
R13: 0000000020000100 R14: 00007f3ea1f6afe0 R15: 0000000020000180
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 20884 Comm: syz-executor.4 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x7/0x60 kernel/kcov.c:200
Code: 46 00 5d be 03 00 00 00 e9 56 36 63 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 65 8b 05 99 c4 8a 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 40 70 02 00 a9
RSP: 0018:ffffc90000dc0dd0 EFLAGS: 00000046
RAX: 0000000000010002 RBX: ffff88802f8e6340 RCX: 1ffff110173a54ab
RDX: dffffc0000000000 RSI: ffffffff840022f8 RDI: ffff88802f8e6348
RBP: ffff8880b9d2a550 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8400226c R11: 0000000000000000 R12: ffff8880b9d2a558
R13: 0000000000000000 R14: ffff8880b9d2a400 R15: 0000000000000000
FS:  00007f42c3c2e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f42c53cd090 CR3: 000000007eec7000 CR4: 0000000000350ee0
Call Trace:
 <IRQ>
 rb_erase_cached include/linux/rbtree.h:126 [inline]
 timerqueue_del+0x74/0x140 lib/timerqueue.c:57
 __remove_hrtimer+0xa1/0x2a0 kernel/time/hrtimer.c:1116
 __run_hrtimer kernel/time/hrtimer.c:1665 [inline]
 __hrtimer_run_queues+0x4ea/0xe50 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200
Code: 48 89 ef 5d e9 b1 22 46 00 5d be 03 00 00 00 e9 56 36 63 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 99 c4 8a 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b
RSP: 0018:ffffc90002d3fa48 EFLAGS: 00000216
RAX: 0000000000003af1 RBX: 0000000000000000 RCX: ffffc9000bd4c000
RDX: 0000000000040000 RSI: ffffffff815ee7ec RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8ff74a07
R10: ffffffff815ee7e2 R11: 0000000000000000 R12: ffffffff84d43c80
R13: 0000000000000200 R14: ffffc90002d3faa8 R15: dffffc0000000000
 console_unlock+0x6c2/0xb70 kernel/printk/printk.c:2716
 vprintk_emit+0x198/0x4f0 kernel/printk/printk.c:2245
 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50
 _printk+0xba/0xed kernel/printk/printk.c:2266
 crypto_arc4_init crypto/arc4.c:46 [inline]
 crypto_arc4_init.cold+0x54/0x60 crypto/arc4.c:44
 crypto_skcipher_init_tfm+0x127/0x180 crypto/skcipher.c:672
 crypto_create_tfm_node+0x10d/0x330 crypto/api.c:497
 crypto_alloc_tfm_node+0x107/0x260 crypto/api.c:573
 alg_bind+0x260/0x500 crypto/af_alg.c:181
 __sys_bind+0x1e9/0x250 net/socket.c:1693
 __do_sys_bind net/socket.c:1704 [inline]
 __se_sys_bind net/socket.c:1702 [inline]
 __x64_sys_bind+0x6f/0xb0 net/socket.c:1702
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f42c52b8e99
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:00007f42c3c2e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00007f42c53cbf60 RCX: 00007f42c52b8e99
RDX: 0000000000000058 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007f42c5312ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc76e381df R14: 00007f42c3c2e300 R15: 0000000000022000
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 c7 c7 c0 0e ac 89 	mov    $0xffffffff89ac0ec0,%rdi
   7:	e8 90 24 bd ff       	callq  0xffbd249c
   c:	e8 b0 e7 cc ff       	callq  0xffcce7c1
  11:	31 c0                	xor    %eax,%eax
  13:	5d                   	pop    %rbp
  14:	c3                   	retq
  15:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1c:	53                   	push   %rbx
  1d:	48 89 fb             	mov    %rdi,%rbx
  20:	48 83 ec 08          	sub    $0x8,%rsp
  24:	48 39 77 10          	cmp    %rsi,0x10(%rdi)
  28:	74 6a                	je     0x94
* 2a:	66 f7 47 22 f0 ff    	testw  $0xfff0,0x22(%rdi) <-- trapping instruction
  30:	74 5a                	je     0x8c
  32:	48 8b 46 08          	mov    0x8(%rsi),%rax
  36:	48 89 f7             	mov    %rsi,%rdi
  39:	48 85 c0             	test   %rax,%rax
  3c:	74 42                	je     0x80
  3e:	8b                   	.byte 0x8b
  3f:	15                   	.byte 0x15

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-root 2021/12/15 05:28 upstream 5472f14a3742 f752fb53 .config log report info INFO: rcu detected stall in sys_bind
* Struck through repros no longer work on HEAD.