syzbot


BUG: soft lockup in net_rx_action

Status: auto-closed as invalid on 2022/05/16 12:13
Reported-by: syzbot+b31af39c8c167c789a7b@syzkaller.appspotmail.com
First crash: 1040d, last: 1040d
Similar bugs (11)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: rcu detected stall in net_rx_action (3) kvm 67 940d 940d 0/28 auto-closed as invalid on 2022/06/05 10:21
android-5-15 BUG: soft lockup in net_rx_action 1 218d 218d 0/2 auto-obsoleted due to no activity on 2024/07/16 07:14
android-5-10 BUG: soft lockup in net_rx_action 2 93d 105d 0/2 auto-obsoleted due to no activity on 2024/11/18 17:50
android-6-1 BUG: soft lockup in net_rx_action 2 111d 154d 0/2 auto-obsoleted due to no activity on 2024/10/31 15:08
upstream INFO: rcu detected stall in net_rx_action (5) virt wireguard wireless 3 209d 247d 0/28 auto-obsoleted due to no activity on 2024/07/25 01:10
android-54 BUG: soft lockup in net_rx_action 1 158d 158d 0/2 auto-obsoleted due to no activity on 2024/09/14 14:52
linux-4.19 BUG: soft lockup in net_rx_action (2) 1 776d 776d 0/1 auto-obsoleted due to no activity on 2023/02/03 20:26
android-5-15 BUG: soft lockup in net_rx_action (2) 1 100d 100d 0/2 auto-obsoleted due to no activity on 2024/11/11 18:48
linux-5.15 INFO: rcu detected stall in net_rx_action 1 428d 428d 0/3 auto-obsoleted due to no activity on 2023/12/28 19:24
upstream INFO: rcu detected stall in net_rx_action (2) batman 1 1093d 1093d 0/28 closed as invalid on 2022/02/08 10:10
upstream INFO: rcu detected stall in net_rx_action (4) kernel 1 656d 656d 0/28 auto-obsoleted due to no activity on 2023/05/05 00:12

Sample crash report:
EXT4-fs (loop0): Unrecognized mount option "ÿÿÿÿ" or missing value
tmpfs: Bad value '5%354m' for mount option 'nr_blocks'
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.3:12955]
Modules linked in:
irq event stamp: 3567637
hardirqs last  enabled at (3567636): [<ffffffff86772f5e>] process_backlog+0x45e/0x700 net/core/dev.c:5875
hardirqs last disabled at (3567637): [<ffffffff81003d00>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last  enabled at (3546344): [<ffffffff88400678>] __do_softirq+0x678/0x980 kernel/softirq.c:318
softirqs last disabled at (3546347): [<ffffffff813927d5>] invoke_softirq kernel/softirq.c:372 [inline]
softirqs last disabled at (3546347): [<ffffffff813927d5>] irq_exit+0x215/0x260 kernel/softirq.c:412
CPU: 1 PID: 12955 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:process_backlog+0x48e/0x700 net/core/dev.c:5844
Code: 89 48 c1 e8 03 42 80 3c 20 00 0f 85 9c 01 00 00 48 83 3d 1c 53 7a 03 00 0f 84 e3 00 00 00 e8 e9 55 eb fa fb 66 0f 1f 44 00 00 <31> ff 89 ee e8 09 57 eb fa 40 84 ed 0f 85 5f fc ff ff e9 33 fe ff
RSP: 0018:ffff8880ba107db8 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13
RAX: ffff888035498080 RBX: ffff8880ba12c4c8 RCX: 1ffff11006a93125
RDX: 0000000000000100 RSI: ffffffff86772f87 RDI: ffff888035498904
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000040 R15: ffff8880ba12c490
FS:  00007f51a3714700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac14b95000 CR3: 0000000009e6d000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 napi_poll net/core/dev.c:6280 [inline]
 net_rx_action+0x4ac/0xfb0 net/core/dev.c:6346
 __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:536 [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
 </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:263 [inline]
RIP: 0010:compound_head include/linux/page-flags.h:142 [inline]
RIP: 0010:PageAnon include/linux/page-flags.h:418 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1340 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1463 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1492 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1513 [inline]
RIP: 0010:unmap_page_range+0x124a/0x2c50 mm/memory.c:1534
Code: 39 79 18 48 0f 43 41 18 4d 85 ed 48 89 41 18 0f 84 36 fe ff ff e8 36 e7 d6 ff 49 8d 6d 08 48 89 e8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 df 16 00 00 49 8b 45 08 31 ff 4d 89 ec 48 89 c3 48 89 84 24
RSP: 0018:ffff8880325e7770 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffffd40004e57b1 RBX: 0000000000000001 RCX: ffff8880325e79b0
RDX: 0000000000000000 RSI: ffffffff818b9e3a RDI: ffff8880325e79c8
RBP: ffffea000272bd88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 800000009caf6007
R13: ffffea000272bd80 R14: dffffc0000000000 R15: 00007f51a423c000
 unmap_single_vma+0x198/0x300 mm/memory.c:1579
 unmap_vmas+0xa9/0x180 mm/memory.c:1609
 exit_mmap+0x2b9/0x530 mm/mmap.c:3093
 __mmput kernel/fork.c:1016 [inline]
 mmput+0x14e/0x4a0 kernel/fork.c:1037
 exit_mm kernel/exit.c:549 [inline]
 do_exit+0xaec/0x2be0 kernel/exit.c:857
 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: 0033:0x7f51a4d9efe9
Code: Bad RIP value.
RSP: 002b:00007f51a3714168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: fffffffffffffffb RBX: 00007f51a4eb1f60 RCX: 00007f51a4d9efe9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006
RBP: 00007f51a4df908d R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffdffa R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3945c6ff R14: 00007f51a3714300 R15: 0000000000022000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60
----------------
Code disassembly (best guess):
   0:	89 48 c1             	mov    %ecx,-0x3f(%rax)
   3:	e8 03 42 80 3c       	callq  0x3c80420b
   8:	20 00                	and    %al,(%rax)
   a:	0f 85 9c 01 00 00    	jne    0x1ac
  10:	48 83 3d 1c 53 7a 03 	cmpq   $0x0,0x37a531c(%rip)        # 0x37a5334
  17:	00
  18:	0f 84 e3 00 00 00    	je     0x101
  1e:	e8 e9 55 eb fa       	callq  0xfaeb560c
  23:	fb                   	sti
  24:	66 0f 1f 44 00 00    	nopw   0x0(%rax,%rax,1)
* 2a:	31 ff                	xor    %edi,%edi <-- trapping instruction
  2c:	89 ee                	mov    %ebp,%esi
  2e:	e8 09 57 eb fa       	callq  0xfaeb573c
  33:	40 84 ed             	test   %bpl,%bpl
  36:	0f 85 5f fc ff ff    	jne    0xfffffc9b
  3c:	e9                   	.byte 0xe9
  3d:	33 fe                	xor    %esi,%edi
  3f:	ff                   	.byte 0xff

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/01/16 12:12 linux-4.19.y 3f8a27f9e27b 723cfaf0 .config console log report info ci2-linux-4-19 BUG: soft lockup in net_rx_action
* Struck through repros no longer work on HEAD.