------------[ cut here ]------------ WARNING: CPU: 1 PID: 8 at net/core/gen_stats.c:157 gnet_stats_add_basic+0x4d/0x2a0 net/core/gen_stats.c:157 Modules linked in: CPU: 1 PID: 8 Comm: kworker/u4:0 Not tainted 5.15.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:gnet_stats_add_basic+0x4d/0x2a0 net/core/gen_stats.c:157 Code: 0f 84 69 01 00 00 e8 52 a1 59 fa 31 ff 65 8b 2d b9 ab e4 78 81 e5 00 01 ff 00 89 ee e8 7c a8 59 fa 85 ed 74 10 e8 33 a1 59 fa <0f> 0b 4d 85 f6 0f 84 70 01 00 00 49 c7 c7 e4 ae 6e 8d bd ff ff ff RSP: 0018:ffffc90000dc0b98 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88806fd72d20 RCX: 0000000000000100 RDX: ffff888010e75580 RSI: ffffffff871d445d RDI: 0000000000000003 RBP: 0000000000000100 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff871d45d0 R11: 0000000000000000 R12: ffff8880258c9408 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6dd5d71718 CR3: 0000000046262000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: est_fetch_counters+0xc3/0x160 net/core/gen_estimator.c:69 est_timer+0x92/0x730 net/core/gen_estimator.c:83 call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 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:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:lock_acquire+0xed/0x510 kernel/locking/lockdep.c:5598 Code: 12 0c 0f 82 64 03 00 00 48 c7 c0 0c e1 6e 8d 48 ba 00 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 <38> d0 7c 08 84 d2 0f 85 b1 03 00 00 8b 0d 9d a1 12 0c 85 c9 0f 84 RSP: 0018:ffffc90000cd7ba0 EFLAGS: 00000202 RAX: 0000000000000007 RBX: 1ffff9200019af76 RCX: 1ffffffff1addc21 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880b9d32a0b R10: ffffed10173a6541 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff8b981ee0 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:267 [inline] rcu_read_lock include/linux/rcupdate.h:687 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:410 [inline] batadv_nc_worker+0x12d/0xfa0 net/batman-adv/network-coding.c:721 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 0f 82 64 03 00 00 jb 0x36a 6: 48 c7 c0 0c e1 6e 8d mov $0xffffffff8d6ee10c,%rax d: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 14: fc ff df 17: 48 89 c1 mov %rax,%rcx 1a: 83 e0 07 and $0x7,%eax 1d: 48 c1 e9 03 shr $0x3,%rcx 21: 83 c0 03 add $0x3,%eax 24: 0f b6 14 11 movzbl (%rcx,%rdx,1),%edx * 28: 38 d0 cmp %dl,%al <-- trapping instruction 2a: 7c 08 jl 0x34 2c: 84 d2 test %dl,%dl 2e: 0f 85 b1 03 00 00 jne 0x3e5 34: 8b 0d 9d a1 12 0c mov 0xc12a19d(%rip),%ecx # 0xc12a1d7 3a: 85 c9 test %ecx,%ecx 3c: 0f .byte 0xf 3d: 84 .byte 0x84