BUG: soft lockup in tasklet_action_common
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syzbot
Dec 6, 2020, 1:23:10 PM12/6/20
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 509a1542 Merge tag '5.10-rc6-smb3-fixes' of git://git.samb..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16d773fd500000
kernel config: https://syzkaller.appspot.com/x/.config?x=e49433cfed49b7d9
dashboard link: https://syzkaller.appspot.com/bug?extid=f5e687a97f5aa22748b9
compiler: gcc (GCC) 10.1.0-syz 20200507
CC: [b...@alien8.de h...@zytor.com linux-...@vger.kernel.org lu...@kernel.org mi...@redhat.com tg...@linutronix.de x...@kernel.org]
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f5e687...@syzkaller.appspotmail.com
watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor.3:16401]
Modules linked in:
irq event stamp: 35791815
hardirqs last enabled at (35791814): [<ffffffff89000d42>] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:657
hardirqs last disabled at (35791815): [<ffffffff88e55bbc>] sysvec_apic_timer_interrupt+0xc/0x100 arch/x86/kernel/apic/apic.c:1091
softirqs last enabled at (27194592): [<ffffffff89000eaf>] asm_call_irq_on_stack+0xf/0x20
softirqs last disabled at (27194595): [<ffffffff89000eaf>] asm_call_irq_on_stack+0xf/0x20
CPU: 1 PID: 16401 Comm: syz-executor.3 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_switch+0xe/0x70 kernel/kcov.c:303
Code: 48 89 f2 48 89 fe bf 07 00 00 00 e9 8c fe ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 41 54 48 89 fa 55 48 89 f5 53 48 8b 46 08 <48> 83 f8 20 74 52 77 39 48 83 f8 08 74 43 48 83 f8 10 75 28 bf 03
RSP: 0018:ffffc90000d909e8 EFLAGS: 00000246
RAX: 0000000000000020 RBX: ffff88802767c85a RCX: ffffffff83b5e925
RDX: 0000000000000006 RSI: ffffffff899d4fc0 RDI: 0000000000000006
RBP: ffffffff899d4fc0 R08: 000000006581e33e R09: ffffffff8ebae667
R10: 000000000000000c R11: 0000000000000001 R12: 0000000000000006
R13: 00000000442fa233 R14: 00000000442fa233 R15: 00000000442fa233
FS: 00007f8f30af8700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020eb4000 CR3: 000000001d519000 CR4: 0000000000350ee0
Call Trace:
<IRQ>
jhash+0x1d7/0x5d0 include/linux/jhash.h:88
rht_key_hashfn include/linux/rhashtable.h:159 [inline]
__rhashtable_lookup+0x22b/0x780 include/linux/rhashtable.h:596
rhltable_lookup include/linux/rhashtable.h:688 [inline]
sta_info_hash_lookup net/mac80211/sta_info.c:162 [inline]
sta_info_get_bss+0x144/0x3f0 net/mac80211/sta_info.c:199
__ieee80211_rx_handle_packet net/mac80211/rx.c:4638 [inline]
ieee80211_rx_list+0xdd3/0x23d0 net/mac80211/rx.c:4759
ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4780
ieee80211_rx include/net/mac80211.h:4502 [inline]
ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:235
tasklet_action_common.constprop.0+0x22f/0x2d0 kernel/softirq.c:560
__do_softirq+0x2a0/0x9f6 kernel/softirq.c:298
asm_call_irq_on_stack+0xf/0x20
</IRQ>
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:393 [inline]
__irq_exit_rcu kernel/softirq.c:423 [inline]
irq_exit_rcu+0x132/0x200 kernel/softirq.c:435
sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1091
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:4789
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 e2 6c 64 f8 e8 ad d2 8e f8 fb bf 01 00 00 00 <e8> 82 d1 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 50 55 64
RSP: 0018:ffffc900040af818 EFLAGS: 00000206
RAX: 00000000019ef4e1 RBX: ffff8880246ecec0 RCX: ffffffff8155a937
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed10048dd9d8 R08: 0000000000000001 R09: ffffffff8ebae70f
R10: fffffbfff1d75ce1 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
irqentry_exit_cond_resched kernel/entry/common.c:357 [inline]
irqentry_exit_cond_resched kernel/entry/common.c:349 [inline]
irqentry_exit+0x7a/0xa0 kernel/entry/common.c:387
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:84 [inline]
RIP: 0010:need_resched include/linux/sched.h:1897 [inline]
RIP: 0010:preempt_schedule_common+0x19/0xc0 kernel/sched/core.c:4695
Code: 9b ca f8 e9 78 ff ff ff 66 0f 1f 84 00 00 00 00 00 41 55 41 54 49 bc 00 00 00 00 00 fc ff df 55 53 65 48 8b 1c 25 00 f0 01 00 <48> 89 dd 48 c1 ed 03 4c 01 e5 65 ff 05 26 08 1b 77 65 8b 05 1f 08
RSP: 0018:ffffc900040af8e8 EFLAGS: 00000202
RAX: 0000000000000246 RBX: ffff8880246ecec0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900040af958 R08: 0000000000000003 R09: ffffffff8ebae70f
R10: fffffbfff1d75ce1 R11: 0000000000000000 R12: dffffc0000000000
R13: 00000000000382b0 R14: 0000000000000297 R15: 0000000000000001
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:40
put_cpu_partial+0x138/0x200 mm/slub.c:2420
qlink_free mm/kasan/quarantine.c:149 [inline]
qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:168
quarantine_reduce+0x17e/0x200 mm/kasan/quarantine.c:261
__kasan_kmalloc.constprop.0+0x9e/0xd0 mm/kasan/common.c:442
slab_post_alloc_hook mm/slab.h:526 [inline]
slab_alloc_node mm/slub.c:2891 [inline]
kmem_cache_alloc_node+0x13b/0x490 mm/slub.c:2927
__alloc_skb+0x71/0x550 net/core/skbuff.c:198
alloc_skb_fclone include/linux/skbuff.h:1144 [inline]
sk_stream_alloc_skb+0x109/0xc30 net/ipv4/tcp.c:888
tcp_sendmsg_locked+0xbb7/0x2d20 net/ipv4/tcp.c:1295
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1444
inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
__sys_sendto+0x21c/0x320 net/socket.c:1992
__do_sys_sendto net/socket.c:2004 [inline]
__se_sys_sendto net/socket.c:2000 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2000
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8f30af7c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002ea00 RCX: 000000000045deb9
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000005
RBP: 000000000119bf78 R08: 0000000000000000 R09: 0000000009000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf2c
R13: 00007ffdae49d00f R14: 00007f8f30af89c0 R15: 000000000119bf2c
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: ksoftirqd/0 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__pvclock_read_cycles arch/x86/include/asm/pvclock.h:84 [inline]
RIP: 0010:pvclock_clocksource_read+0x6b/0x510 arch/x86/kernel/pvclock.c:76
Code: c0 0f 95 c0 84 c1 0f 85 80 04 00 00 4c 89 e0 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 68 04 00 00 48 8d 43 08 8b 0b <48> bd 00 00 00 00 00 fc ff df 48 8d 7b 1c 48 89 44 24 08 48 c1 e8
RSP: 0018:ffffc90000cf7ce0 EFLAGS: 00000046
RAX: ffffffff8e48d008 RBX: ffffffff8e48d000 RCX: 0000000000000008
RDX: 0000000000000000 RSI: 0000000000000100 RDI: ffffffff8e48d000
RBP: ffff888010d69a40 R08: 0000000000000000 R09: ffff888010d69a47
R10: ffffed10021ad348 R11: 0000000000000001 R12: ffffffff8e48d003
R13: 0000000000000038 R14: 0000000000000006 R15: 0000000000000040
FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563fcd9200c8 CR3: 00000000142dc000 CR4: 0000000000350ef0
Call Trace:
kvm_clock_read arch/x86/kernel/kvmclock.c:90 [inline]
kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:102
paravirt_sched_clock arch/x86/include/asm/paravirt.h:22 [inline]
sched_clock+0x2a/0x40 arch/x86/kernel/tsc.c:252
sched_clock_cpu+0x18/0x1f0 kernel/sched/clock.c:371
irqtime_account_irq+0x71/0x2d0 kernel/sched/cputime.c:60
account_irq_exit_time include/linux/vtime.h:115 [inline]
__do_softirq+0x5e0/0x9f6 kernel/softirq.c:324
run_ksoftirqd kernel/softirq.c:653 [inline]
run_ksoftirqd+0x2d/0x50 kernel/softirq.c:645
smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 509a1542 Merge tag '5.10-rc6-smb3-fixes' of git://git.samb..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16d773fd500000
kernel config: https://syzkaller.appspot.com/x/.config?x=e49433cfed49b7d9
dashboard link: https://syzkaller.appspot.com/bug?extid=f5e687a97f5aa22748b9
compiler: gcc (GCC) 10.1.0-syz 20200507
CC: [b...@alien8.de h...@zytor.com linux-...@vger.kernel.org lu...@kernel.org mi...@redhat.com tg...@linutronix.de x...@kernel.org]
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f5e687...@syzkaller.appspotmail.com
watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor.3:16401]
Modules linked in:
irq event stamp: 35791815
hardirqs last enabled at (35791814): [<ffffffff89000d42>] asm_sysvec_irq_work+0x12/0x20 arch/x86/include/asm/idtentry.h:657
hardirqs last disabled at (35791815): [<ffffffff88e55bbc>] sysvec_apic_timer_interrupt+0xc/0x100 arch/x86/kernel/apic/apic.c:1091
softirqs last enabled at (27194592): [<ffffffff89000eaf>] asm_call_irq_on_stack+0xf/0x20
softirqs last disabled at (27194595): [<ffffffff89000eaf>] asm_call_irq_on_stack+0xf/0x20
CPU: 1 PID: 16401 Comm: syz-executor.3 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_switch+0xe/0x70 kernel/kcov.c:303
Code: 48 89 f2 48 89 fe bf 07 00 00 00 e9 8c fe ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 41 54 48 89 fa 55 48 89 f5 53 48 8b 46 08 <48> 83 f8 20 74 52 77 39 48 83 f8 08 74 43 48 83 f8 10 75 28 bf 03
RSP: 0018:ffffc90000d909e8 EFLAGS: 00000246
RAX: 0000000000000020 RBX: ffff88802767c85a RCX: ffffffff83b5e925
RDX: 0000000000000006 RSI: ffffffff899d4fc0 RDI: 0000000000000006
RBP: ffffffff899d4fc0 R08: 000000006581e33e R09: ffffffff8ebae667
R10: 000000000000000c R11: 0000000000000001 R12: 0000000000000006
R13: 00000000442fa233 R14: 00000000442fa233 R15: 00000000442fa233
FS: 00007f8f30af8700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020eb4000 CR3: 000000001d519000 CR4: 0000000000350ee0
Call Trace:
<IRQ>
jhash+0x1d7/0x5d0 include/linux/jhash.h:88
rht_key_hashfn include/linux/rhashtable.h:159 [inline]
__rhashtable_lookup+0x22b/0x780 include/linux/rhashtable.h:596
rhltable_lookup include/linux/rhashtable.h:688 [inline]
sta_info_hash_lookup net/mac80211/sta_info.c:162 [inline]
sta_info_get_bss+0x144/0x3f0 net/mac80211/sta_info.c:199
__ieee80211_rx_handle_packet net/mac80211/rx.c:4638 [inline]
ieee80211_rx_list+0xdd3/0x23d0 net/mac80211/rx.c:4759
ieee80211_rx_napi+0xf7/0x3d0 net/mac80211/rx.c:4780
ieee80211_rx include/net/mac80211.h:4502 [inline]
ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:235
tasklet_action_common.constprop.0+0x22f/0x2d0 kernel/softirq.c:560
__do_softirq+0x2a0/0x9f6 kernel/softirq.c:298
asm_call_irq_on_stack+0xf/0x20
</IRQ>
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77
invoke_softirq kernel/softirq.c:393 [inline]
__irq_exit_rcu kernel/softirq.c:423 [inline]
irq_exit_rcu+0x132/0x200 kernel/softirq.c:435
sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1091
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:4789
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 e2 6c 64 f8 e8 ad d2 8e f8 fb bf 01 00 00 00 <e8> 82 d1 ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 50 55 64
RSP: 0018:ffffc900040af818 EFLAGS: 00000206
RAX: 00000000019ef4e1 RBX: ffff8880246ecec0 RCX: ffffffff8155a937
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed10048dd9d8 R08: 0000000000000001 R09: ffffffff8ebae70f
R10: fffffbfff1d75ce1 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
irqentry_exit_cond_resched kernel/entry/common.c:357 [inline]
irqentry_exit_cond_resched kernel/entry/common.c:349 [inline]
irqentry_exit+0x7a/0xa0 kernel/entry/common.c:387
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline]
RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:84 [inline]
RIP: 0010:need_resched include/linux/sched.h:1897 [inline]
RIP: 0010:preempt_schedule_common+0x19/0xc0 kernel/sched/core.c:4695
Code: 9b ca f8 e9 78 ff ff ff 66 0f 1f 84 00 00 00 00 00 41 55 41 54 49 bc 00 00 00 00 00 fc ff df 55 53 65 48 8b 1c 25 00 f0 01 00 <48> 89 dd 48 c1 ed 03 4c 01 e5 65 ff 05 26 08 1b 77 65 8b 05 1f 08
RSP: 0018:ffffc900040af8e8 EFLAGS: 00000202
RAX: 0000000000000246 RBX: ffff8880246ecec0 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900040af958 R08: 0000000000000003 R09: ffffffff8ebae70f
R10: fffffbfff1d75ce1 R11: 0000000000000000 R12: dffffc0000000000
R13: 00000000000382b0 R14: 0000000000000297 R15: 0000000000000001
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:40
put_cpu_partial+0x138/0x200 mm/slub.c:2420
qlink_free mm/kasan/quarantine.c:149 [inline]
qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:168
quarantine_reduce+0x17e/0x200 mm/kasan/quarantine.c:261
__kasan_kmalloc.constprop.0+0x9e/0xd0 mm/kasan/common.c:442
slab_post_alloc_hook mm/slab.h:526 [inline]
slab_alloc_node mm/slub.c:2891 [inline]
kmem_cache_alloc_node+0x13b/0x490 mm/slub.c:2927
__alloc_skb+0x71/0x550 net/core/skbuff.c:198
alloc_skb_fclone include/linux/skbuff.h:1144 [inline]
sk_stream_alloc_skb+0x109/0xc30 net/ipv4/tcp.c:888
tcp_sendmsg_locked+0xbb7/0x2d20 net/ipv4/tcp.c:1295
tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1444
inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:671
__sys_sendto+0x21c/0x320 net/socket.c:1992
__do_sys_sendto net/socket.c:2004 [inline]
__se_sys_sendto net/socket.c:2000 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2000
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8f30af7c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 000000000002ea00 RCX: 000000000045deb9
RDX: ffffffffffffffef RSI: 0000000020d7cfcb RDI: 0000000000000005
RBP: 000000000119bf78 R08: 0000000000000000 R09: 0000000009000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf2c
R13: 00007ffdae49d00f R14: 00007f8f30af89c0 R15: 000000000119bf2c
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 10 Comm: ksoftirqd/0 Not tainted 5.10.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__pvclock_read_cycles arch/x86/include/asm/pvclock.h:84 [inline]
RIP: 0010:pvclock_clocksource_read+0x6b/0x510 arch/x86/kernel/pvclock.c:76
Code: c0 0f 95 c0 84 c1 0f 85 80 04 00 00 4c 89 e0 83 e0 07 38 c2 0f 9e c1 84 d2 0f 95 c0 84 c1 0f 85 68 04 00 00 48 8d 43 08 8b 0b <48> bd 00 00 00 00 00 fc ff df 48 8d 7b 1c 48 89 44 24 08 48 c1 e8
RSP: 0018:ffffc90000cf7ce0 EFLAGS: 00000046
RAX: ffffffff8e48d008 RBX: ffffffff8e48d000 RCX: 0000000000000008
RDX: 0000000000000000 RSI: 0000000000000100 RDI: ffffffff8e48d000
RBP: ffff888010d69a40 R08: 0000000000000000 R09: ffff888010d69a47
R10: ffffed10021ad348 R11: 0000000000000001 R12: ffffffff8e48d003
R13: 0000000000000038 R14: 0000000000000006 R15: 0000000000000040
FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563fcd9200c8 CR3: 00000000142dc000 CR4: 0000000000350ef0
Call Trace:
kvm_clock_read arch/x86/kernel/kvmclock.c:90 [inline]
kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:102
paravirt_sched_clock arch/x86/include/asm/paravirt.h:22 [inline]
sched_clock+0x2a/0x40 arch/x86/kernel/tsc.c:252
sched_clock_cpu+0x18/0x1f0 kernel/sched/clock.c:371
irqtime_account_irq+0x71/0x2d0 kernel/sched/cputime.c:60
account_irq_exit_time include/linux/vtime.h:115 [inline]
__do_softirq+0x5e0/0x9f6 kernel/softirq.c:324
run_ksoftirqd kernel/softirq.c:653 [inline]
run_ksoftirqd+0x2d/0x50 kernel/softirq.c:645
smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
kthread+0x3b1/0x4a0 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
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Dmitry Vyukov
Dec 7, 2020, 1:24:59 AM12/7/20
to syzbot, 'Dmitry Vyukov' via syzkaller-upstream-moderation
On Sun, Dec 6, 2020 at 7:23 PM syzbot
<syzbot+f5e687...@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 509a1542 Merge tag '5.10-rc6-smb3-fixes' of git://git.samb..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=16d773fd500000
> kernel config: https://syzkaller.appspot.com/x/.config?x=e49433cfed49b7d9
> dashboard link: https://syzkaller.appspot.com/bug?extid=f5e687a97f5aa22748b9
> compiler: gcc (GCC) 10.1.0-syz 20200507
> CC: [b...@alien8.de h...@zytor.com linux-...@vger.kernel.org lu...@kernel.org mi...@redhat.com tg...@linutronix.de x...@kernel.org]
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+f5e687...@syzkaller.appspotmail.com
This should be attributed better with
<syzbot+f5e687...@syzkaller.appspotmail.com> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 509a1542 Merge tag '5.10-rc6-smb3-fixes' of git://git.samb..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=16d773fd500000
> kernel config: https://syzkaller.appspot.com/x/.config?x=e49433cfed49b7d9
> dashboard link: https://syzkaller.appspot.com/bug?extid=f5e687a97f5aa22748b9
> compiler: gcc (GCC) 10.1.0-syz 20200507
> CC: [b...@alien8.de h...@zytor.com linux-...@vger.kernel.org lu...@kernel.org mi...@redhat.com tg...@linutronix.de x...@kernel.org]
>
> Unfortunately, I don't have any reproducer for this issue yet.
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+f5e687...@syzkaller.appspotmail.com
https://github.com/google/syzkaller/pull/2320/files
So far this happened only once, and we need more cases to "prove" it's
real, so let's close this for now. If this will happen more we will
get new better reports.
#syz invalid
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