watchdog: BUG: soft lockup - CPU#1 stuck for 24s! [syz-executor.7:17091] Modules linked in: irq event stamp: 4440477 hardirqs last enabled at (4440476): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4440477): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4374428): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4374431): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 17091 Comm: syz-executor.7 Not tainted 6.1.0-rc5-next-20221114 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x6f/0xf0 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 48 01 RSP: 0018:ffff88806cf09798 EFLAGS: 00000217 RAX: 1ffffffff0be318e RBX: ffffffff85f18c74 RCX: ffffffff82fbc1e1 RDX: 0000000000000000 RSI: ffffffff862efd14 RDI: ffffffff85f18c64 RBP: ffffffff85f18c64 R08: ffffffff862efd14 R09: ffffffff86427fb2 R10: ffffed100d9e1319 R11: 0000000000038001 R12: ffffffff85f18c84 R13: ffffffff85f18c64 R14: ffffffff85f18c64 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557452098 CR3: 000000003a31a000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0x2b1/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x378/0xc00 __kmem_cache_alloc_node+0x257/0x400 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3de/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__schedule+0x1/0x25d0 Code: 3e fd e9 fe fe ff ff e8 dd 7e 3e fd e9 68 ff ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <48> 89 e5 41 57 41 56 48 8d 85 38 ff ff ff 49 c7 c6 40 90 03 00 41 RSP: 0018:ffff8880452bf6c0 EFLAGS: 00000246 RAX: 1ffff11007617268 RBX: ffff88803b0b8000 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: ffffed1007617000 R08: 0000000000000006 R09: 00007fb890456000 R10: 00007fb8905b6000 R11: 0000000000000001 R12: dffffc0000000000 R13: ffffffff843e73bb R14: 00007fb8905b6000 R15: ffff8880452bfad8 preempt_schedule_common+0x45/0xc0 __cond_resched+0x1b/0x30 unmap_page_range+0xd7d/0x2c30 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb89263eb19 Code: Unable to access opcode bytes at 0x7fb89263eaef. RSP: 002b:00007fb88fbb4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: fffffffffffffffc RBX: 00007fb892751f60 RCX: 00007fb89263eb19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000007 RBP: 00007fb892698f6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd43369b5f R14: 00007fb88fbb4300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 17084 Comm: syz-executor.1 Not tainted 6.1.0-rc5-next-20221114 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:filter_irq_stacks+0x6d/0x90 Code: 48 83 c4 08 44 89 e0 5b 5d 41 5c e9 d1 15 08 03 48 3d 50 f4 3f 84 72 08 48 3d 59 fd 3f 84 72 dc 83 c3 01 48 83 c7 08 41 39 dc <75> b0 48 83 c4 08 44 89 e0 5b 5d 41 5c e9 a5 15 08 03 48 89 3c 24 RSP: 0018:ffff88806ce09940 EFLAGS: 00000216 RAX: ffffffff840d5163 RBX: 0000000000000006 RCX: 0000000000000800 RDX: 0000000000000000 RSI: 0000000000000010 RDI: ffff88806ce09a28 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8646b440 R10: ffff88806ce09ff8 R11: 0000000000038001 R12: 0000000000000010 R13: 0000000000000001 R14: 0000000000000800 R15: ffff88806ce099f8 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fddb7f44718 CR3: 0000000005426000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __stack_depot_save+0x3e/0x4e0 set_track_prepare+0x85/0xd0 __create_object+0x378/0xc00 kmem_cache_alloc_node+0x282/0x420 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3de/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x541/0xb50 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:lock_acquire+0x1df/0x530 Code: 03 b8 ff ff ff ff 65 0f c1 05 0d 79 d6 7e 83 f8 01 0f 85 c8 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffff888042e7f510 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff110085cfea4 RCX: 00000000ebd61952 RDX: 1ffff11006b3db33 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8762f847 R10: fffffbfff0ec5f08 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff856082e0 R15: 0000000000000000 folio_memcg_lock+0x3e/0x4a0 page_remove_rmap+0x102/0x780 unmap_page_range+0x2002/0x2c30 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fddbaa10b19 Code: Unable to access opcode bytes at 0x7fddbaa10aef. RSP: 002b:00007fddb7f86188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: 000000000000000c RBX: 00007fddbab23f60 RCX: 00007fddbaa10b19 RDX: 0000000000000088 RSI: 0000000000000002 RDI: 000000000000000a RBP: 00007fddbaa6af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc8db81f0f R14: 00007fddb7f86300 R15: 0000000000022000 loop4: detected capacity change from 0 to 40 ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 50 jne 0x8b 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1