syzbot


general protection fault in br_multicast_group_expired

Status: closed as invalid on 2021/09/24 01:17
Reported-by: syzbot+@syzkaller.appspotmail.com
First crash: 493d, last: 493d

Sample crash report:
general protection fault, probably for non-canonical address 0xe1a19de1e1e1e256: 0000 [#1] PREEMPT SMP KASAN
KASAN: maybe wild-memory-access in range [0x0d0d0f0f0f0f12b0-0x0d0d0f0f0f0f12b7]
CPU: 0 PID: 20552 Comm: syz-executor.4 Not tainted 5.14.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:perf_trace_lock_acquire+0x9d/0x550 include/trace/events/lock.h:13
Code: 04 f1 f1 04 f2 c7 40 08 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 8d 46 18 48 89 85 48 ff ff ff 48 c1 e8 03 <80> 3c 10 00 0f 85 4d 03 00 00 49 8b 7e 18 48 c7 c0 e0 df 8b 89 48
RSP: 0018:ffffc90000007b08 EFLAGS: 00010207
RAX: 01a1a1e1e1e1e256 RBX: 1ffff92000000f84 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0d0d0f0f0f0f129d RDI: ffffffff8b878c80
RBP: ffffc90000007bf0 R08: 0000000000000000 R09: 0000000000000001
R10: fffffbfff1ad8e0a R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8b878c80 R14: 0d0d0f0f0f0f129d R15: ffffc90000007bc8
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000000050 CR3: 0000000066a39000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 trace_lock_acquire include/trace/events/lock.h:13 [inline]
 lock_acquire+0x416/0x510 kernel/locking/lockdep.c:5596
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:354 [inline]
 br_multicast_group_expired+0x40/0x1a0 net/bridge/br_multicast.c:544
 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1419
 expire_timers kernel/time/timer.c:1464 [inline]
 __run_timers.part.0+0x675/0xa50 kernel/time/timer.c:1732
 __run_timers kernel/time/timer.c:1713 [inline]
 run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1745
 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558
 invoke_softirq kernel/softirq.c:432 [inline]
 __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:191
Code: 74 24 10 e8 9a 4b 2e f8 48 89 ef e8 42 c1 2e f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> 23 9b 22 f8 65 8b 05 3c 26 d5 76 85 c0 74 0a 5b 5d c3 e8 b0 f4
RSP: 0018:ffffc9000a7d7740 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000200 RCX: 1ffffffff1ad8899
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8880109b5850 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817bbe78 R11: 0000000000000000 R12: 0000000000000001
R13: 000000000000000f R14: dffffc0000000000 R15: 000000000000000f
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 unlock_page_lruvec_irqrestore include/linux/memcontrol.h:1497 [inline]
 release_pages+0x2089/0x20b0 mm/swap.c:969
 __pagevec_release+0x77/0x100 mm/swap.c:992
 pagevec_release include/linux/pagevec.h:81 [inline]
 shmem_undo_range+0x6fb/0x1650 mm/shmem.c:931
 shmem_truncate_range mm/shmem.c:1030 [inline]
 shmem_evict_inode+0x3a4/0xbd0 mm/shmem.c:1132
 evict+0x2ed/0x6b0 fs/inode.c:584
 iput_final fs/inode.c:1660 [inline]
 iput.part.0+0x539/0x850 fs/inode.c:1686
 iput+0x58/0x70 fs/inode.c:1676
 dentry_unlink_inode+0x2b1/0x3d0 fs/dcache.c:376
 __dentry_kill+0x3c0/0x640 fs/dcache.c:582
 dentry_kill fs/dcache.c:708 [inline]
 dput+0x73a/0xbc0 fs/dcache.c:888
 __fput+0x3ae/0x920 fs/file_table.c:293
 task_work_run+0xdd/0x1a0 kernel/task_work.c:164
 exit_task_work include/linux/task_work.h:32 [inline]
 do_exit+0xbd4/0x2a60 kernel/exit.c:825
 do_group_exit+0x125/0x310 kernel/exit.c:922
 __do_sys_exit_group kernel/exit.c:933 [inline]
 __se_sys_exit_group kernel/exit.c:931 [inline]
 __ia32_sys_exit_group+0x3a/0x50 kernel/exit.c:931
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f27549
Code: Unable to access opcode bytes at RIP 0xf7f2751f.
RSP: 002b:00000000086cfd1c EFLAGS: 00000206 ORIG_RAX: 00000000000000fc
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000ffffffff RSI: 0000000000000003 RDI: 000000000816c000
RBP: 000000000000001e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 7547c3a82bb0a9bf ]---
RIP: 0010:perf_trace_lock_acquire+0x9d/0x550 include/trace/events/lock.h:13
Code: 04 f1 f1 04 f2 c7 40 08 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 48 8d 46 18 48 89 85 48 ff ff ff 48 c1 e8 03 <80> 3c 10 00 0f 85 4d 03 00 00 49 8b 7e 18 48 c7 c0 e0 df 8b 89 48
RSP: 0018:ffffc90000007b08 EFLAGS: 00010207
RAX: 01a1a1e1e1e1e256 RBX: 1ffff92000000f84 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0d0d0f0f0f0f129d RDI: ffffffff8b878c80
RBP: ffffc90000007bf0 R08: 0000000000000000 R09: 0000000000000001
R10: fffffbfff1ad8e0a R11: 0000000000000000 R12: 0000000000000000
R13: ffffffff8b878c80 R14: 0d0d0f0f0f0f129d R15: ffffc90000007bc8
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000000000050 CR3: 0000000066a39000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-386 2021/08/01 01:00 upstream f3438b4c4e69 6c236867 .config log report info general protection fault in br_multicast_group_expired
* Struck through repros no longer work on HEAD.