watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.2:27813] Modules linked in: irq event stamp: 2440913 hardirqs last enabled at (2440912): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2440913): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2412768): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2412787): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 27813 Comm: syz-executor.2 Not tainted 6.12.0-next-20241118 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x6f/0xf0 Code: 77 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:ffff88806ce09760 EFLAGS: 00000217 RAX: 1ffffffff0cd1d1b RBX: ffffffff8668e8dc RCX: ffffffff838fd399 RDX: 0000000000000000 RSI: ffffffff86ae8b7a RDI: ffffffff8668e8cc RBP: ffffffff8668e8cc R08: ffffffff86ae8b7a R09: ffff88806ce09858 R10: 000000000003c001 R11: 0000000000095c05 R12: ffffffff8668e8f0 R13: ffffffff8668e8cc R14: ffffffff8668e8cc R15: dffffc0000000000 FS: 00007f2434bcf700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f323000 CR3: 0000000026996000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_next_frame+0x2b7/0x2490 arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 set_track_prepare+0x36/0x70 __alloc_object+0xf4/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 __alloc_skb+0x2ad/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/0xa70 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:qlist_free_all+0x25/0x160 Code: 90 90 90 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 <48> 8b 18 48 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 e7 f0 ff ff 49 89 RSP: 0018:ffff88803496f710 EFLAGS: 00000246 RAX: ffff888038e80d00 RBX: ffff888038e80d00 RCX: ffffea0000e3a000 RDX: 0000000000000000 RSI: ffff888008c418c0 RDI: ffffffff8486ba6c RBP: ffff888008c418c0 R08: 0000000000000001 R09: fffffbfff0fdd9f1 R10: ffffffff87eecf8f R11: 00000000000007e0 R12: 0000000000000000 R13: ffff88803496f748 R14: ffff88800e0594a0 R15: ffff88800e0594a0 kasan_quarantine_reduce+0x19f/0x240 __kasan_kmalloc+0x6f/0x90 __kmalloc_noprof+0x1f7/0x4b0 kmalloc_array_noprof+0x42/0x70 ext4_find_extent+0x6fe/0x9b0 ext4_ext_map_blocks+0x1cc/0x5ac0 ext4_map_blocks+0x3f1/0x1500 ext4_alloc_file_blocks.isra.0+0x2c9/0xb60 ext4_fallocate+0x3bf/0x35c0 vfs_fallocate+0x3ef/0xd60 __x64_sys_fallocate+0xd7/0x150 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2437659b19 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:00007f2434bcf188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f243776cf60 RCX: 00007f2437659b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f24376b3f6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000087ffffc R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdb2470cdf R14: 00007f2434bcf300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 Bluetooth: Unexpected continuation frame (len 10) Bluetooth: Unexpected continuation frame (len 10) Bluetooth: Unexpected continuation frame (len 10) Bluetooth: Unexpected continuation frame (len 10) Bluetooth: Unexpected continuation frame (len 10) random: crng reseeded on system resumption random: crng reseeded on system resumption EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. random: crng reseeded on system resumption EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. random: crng reseeded on system resumption random: crng reseeded on system resumption EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8 r/w. Quota mode: none. ---------------- Code disassembly (best guess): 0: 77 4d ja 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