watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.6:7467] Modules linked in: irq event stamp: 2592021 hardirqs last enabled at (2592020): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2592021): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2589906): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2589911): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 7467 Comm: syz-executor.6 Not tainted 6.12.0-next-20241128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:do_csum+0x15b/0x2f0 Code: 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 0c 02 4c 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 80 01 00 00 41 8b 3f <41> 01 dc 49 83 c7 04 31 db 41 01 fc 44 89 e6 0f 92 c3 e8 ee d2 19 RSP: 0018:ffff88806ce09790 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffffffff823832ae RDI: 00000000e2f8c1e3 RBP: 00000000000005c6 R08: ffff88806ce098b0 R09: fffffbfff0fdddec R10: 00000000c55e2ca1 R11: 0000000000000000 R12: 00000000c55e2ca1 R13: ffff88803cba1e64 R14: 0000000000000000 R15: ffff88803cba1f00 FS: 00007ff3b8624700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000001ac04000 CR4: 0000000000350ef0 Call Trace: csum_partial+0x24/0x60 __skb_checksum+0x136/0xb10 skb_checksum+0x94/0xd0 __skb_gro_checksum_complete+0x78/0x260 tcp4_gro_receive+0x3c5/0x1280 inet_gro_receive+0x7e8/0xdc0 dev_gro_receive+0x1ea7/0x2770 napi_gro_receive+0x48c/0xbd0 e1000_clean_rx_irq+0x7e1/0x11a0 e1000_clean+0x960/0x2540 __napi_poll+0xb9/0x540 net_rx_action+0xa08/0xe00 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:cmp_ex_search+0x57/0xb0 Code: 48 8b 6d 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 43 48 63 33 <48> 89 ef 41 bc 01 00 00 00 48 01 f3 48 89 de e8 85 0e d6 fc 48 39 RSP: 0018:ffff88803e71f658 EFLAGS: 00000246 RAX: 0000000000000007 RBX: ffffffff85890dbc RCX: ffffc900021f4000 RDX: 0000000000000000 RSI: fffffffffc0eaa46 RDI: ffff88803e71f6e0 RBP: ffffffff8483d5c3 R08: ffffffff847bf720 R09: ffffed100787a4ee R10: 0000000000000290 R11: 0000000000000000 R12: ffffffff85890dbc R13: 0000000000000001 R14: ffffffff8588fe5c R15: ffff88803e71f6e0 bsearch+0x5e/0xc0 search_extable+0x83/0xb0 search_exception_tables+0x37/0x50 fixup_exception+0x51/0xb10 kernelmode_fixup_or_oops.constprop.0+0x6c/0xe0 __bad_area_nosemaphore+0x389/0x620 do_user_addr_fault+0x61b/0xf40 exc_page_fault+0x9c/0x1a0 asm_exc_page_fault+0x26/0x30 RIP: 0010:rep_movs_alternative+0x13/0x70 Code: 63 03 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 83 f9 40 73 40 83 f9 08 73 21 85 c9 74 0f <8a> 06 88 07 48 ff c7 48 ff c6 48 ff c9 75 f1 e9 49 63 03 00 66 0f RSP: 0018:ffff88803e71f950 EFLAGS: 00050206 RAX: 0000000000000003 RBX: 000000000000083b RCX: 000000000000083b RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888040d1f7c5 RBP: 000000000000083b R08: 0000000000000001 R09: ffffed10081a3fff R10: ffff888040d1ffff R11: 0000000000000000 R12: 0000000000000000 R13: ffff88803e71fd70 R14: ffff888040d1f7c5 R15: 0000000000000000 _copy_from_iter+0x48f/0x15b0 copy_page_from_iter+0xe3/0x180 process_vm_rw_core.constprop.0+0x4c2/0x980 process_vm_rw+0x1b5/0x260 __x64_sys_process_vm_writev+0xe3/0x1c0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff3bb0aeb19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff3b8624188 EFLAGS: 00000246 ORIG_RAX: 0000000000000137 RAX: ffffffffffffffda RBX: 00007ff3bb1c1f60 RCX: 00007ff3bb0aeb19 RDX: 0000000000000003 RSI: 00000000200016c0 RDI: 000000000000006d RBP: 00007ff3bb108f6d R08: 0000000000000001 R09: 0000000000000000 R10: 0000000020002b80 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd5cdeb6ff R14: 00007ff3b8624300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 7499 Comm: syz-executor.0 Not tainted 6.12.0-next-20241128 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lapic_next_deadline+0x25/0x50 Code: 90 90 90 90 90 f3 0f 1e fa 66 0f 1f 44 00 00 0f 31 48 c1 e2 20 b9 e0 06 00 00 48 09 c2 48 8d 04 fa 48 89 c2 48 c1 ea 20 0f 30 <66> 90 31 c0 e9 f2 43 75 03 48 89 c6 31 d2 bf e0 06 00 00 e8 23 86 RSP: 0018:ffff88806cf093b8 EFLAGS: 00000013 RAX: 000000b5927c65c0 RBX: 0000000000000000 RCX: 00000000000006e0 RDX: 00000000000000b5 RSI: ffff88806cf28300 RDI: 000000000000015d RBP: ffff88806cf28300 R08: 0000000000000001 R09: ffff88803ba325b8 R10: 00000000000000e0 R11: 0000000000000000 R12: 000000000000015d R13: 0000000000000000 R14: 0000000000000001 R15: ffff88806cf2ce40 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560c40abb618 CR3: 00000000162ba000 CR4: 0000000000350ef0 Call Trace: clockevents_program_event+0x248/0x360 tick_program_event+0xa4/0x140 hrtimer_interrupt+0x3ba/0x830 __sysvec_apic_timer_interrupt+0xc2/0x330 sysvec_apic_timer_interrupt+0x34/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:arch_stack_walk+0xa0/0xf0 Code: 03 84 c0 74 2a 48 8d bd 68 ff ff ff e8 69 83 07 00 8b 85 68 ff ff ff 85 c0 74 14 48 8d bd 68 ff ff ff e8 c3 80 07 00 48 89 c6 <48> 85 c0 75 ca 48 8b 45 d8 65 48 2b 04 25 28 00 00 00 75 32 48 83 RSP: 0018:ffff88806cf095a8 EFLAGS: 00000246 RAX: ffffffff811a9621 RBX: ffffffff813f1b50 RCX: 0000000000000001 RDX: 1ffff1100d9e12c0 RSI: ffffffff811a9621 RDI: ffffffff811a9621 RBP: ffff88806cf09640 R08: 0000000000000001 R09: ffff88806cf095e8 R10: 000000000003c001 R11: 0000000000012b75 R12: ffff88806cf09670 R13: 0000000000000000 R14: ffff88803ba31b80 R15: 0000000000092820 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7c0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__tlb_remove_folio_pages_size.constprop.0+0x147/0x560 Code: 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 4d 03 00 00 41 8b 6e 0c 44 89 e7 83 ed 01 89 ee e8 ec e2 d4 ff 41 39 ec <73> 36 e8 72 e0 d4 ff 89 ee 44 89 e7 45 31 ed e8 d5 e2 d4 ff 41 39 RSP: 0018:ffff88803f35f638 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff88803f35fad0 RCX: ffffffff817d22f4 RDX: ffff88803ba31b80 RSI: 00000000000000ec RDI: 0000000000000004 RBP: 00000000000001fd R08: 0000000000000000 R09: fffff9400016fbde R10: 00000000000001fd R11: 00000000b504f333 R12: 00000000000000ec R13: 0000000000000001 R14: ffff88803c8a4000 R15: 00000000000000eb unmap_page_range+0xef2/0x3590 unmap_single_vma+0x19a/0x2b0 unmap_vmas+0x1f1/0x450 exit_mmap+0x187/0xac0 mmput+0xd5/0x390 do_exit+0x9ae/0x2a40 do_group_exit+0xd3/0x2a0 get_signal+0x2240/0x2320 arch_do_signal_or_restart+0x81/0x780 syscall_exit_to_user_mode+0x123/0x1e0 do_syscall_64+0xcc/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4a2fb53b19 Code: Unable to access opcode bytes at 0x7f4a2fb53aef. RSP: 002b:00007f4a2d0c9188 EFLAGS: 00000246 ORIG_RAX: 0000000000000137 RAX: 0000000000000045 RBX: 00007f4a2fc66f60 RCX: 00007f4a2fb53b19 RDX: 0000000000000003 RSI: 00000000200016c0 RDI: 0000000000000062 RBP: 00007f4a2fbadf6d R08: 0000000000000001 R09: 0000000000000000 R10: 0000000020002b80 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe6018f8ef R14: 00007f4a2d0c9300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 7: fc ff df a: 48 c1 ea 03 shr $0x3,%rdx e: 0f b6 0c 02 movzbl (%rdx,%rax,1),%ecx 12: 4c 89 fa mov %r15,%rdx 15: 83 e2 07 and $0x7,%edx 18: 83 c2 03 add $0x3,%edx 1b: 38 ca cmp %cl,%dl 1d: 7c 08 jl 0x27 1f: 84 c9 test %cl,%cl 21: 0f 85 80 01 00 00 jne 0x1a7 27: 41 8b 3f mov (%r15),%edi * 2a: 41 01 dc add %ebx,%r12d <-- trapping instruction 2d: 49 83 c7 04 add $0x4,%r15 31: 31 db xor %ebx,%ebx 33: 41 01 fc add %edi,%r12d 36: 44 89 e6 mov %r12d,%esi 39: 0f 92 c3 setb %bl 3c: e8 .byte 0xe8 3d: ee out %al,(%dx) 3e: d2 19 rcrb %cl,(%rcx)