watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.5:9076] Modules linked in: irq event stamp: 4555097 hardirqs last enabled at (4555096): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4555097): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (4523708): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4523711): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 9076 Comm: syz-executor.5 Not tainted 5.10.149 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:30 [inline] RIP: 0010:__orc_find+0x83/0xf0 arch/x86/kernel/unwind_orc.c:52 Code: 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 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 ee 49 c1 RSP: 0018:ffff88806ce09618 EFLAGS: 00000246 RAX: fffffffffbfa5557 RBX: ffffffff85717940 RCX: ffffffff816bce63 RDX: 0000000000000000 RSI: ffffffff85a04830 RDI: ffffffff85717934 RBP: ffffffff85717934 R08: ffffffff85a04830 R09: ffffffff85a04860 R10: 0000000000032042 R11: 1ffff1100d9c12d4 R12: ffffffff85717950 R13: ffffffff85717934 R14: ffffffff85717934 R15: dffffc0000000000 FS: 00007f853ea1f700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffa0214c718 CR3: 0000000044f30000 CR4: 0000000000350ef0 DR0: 0000000020000140 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:178 [inline] unwind_next_frame+0x2b3/0x1a90 arch/x86/kernel/unwind_orc.c:448 arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48 kasan_set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc9/0xd0 mm/kasan/common.c:461 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] __kmalloc_node_track_caller+0x189/0x3f0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:142 [inline] __alloc_skb+0xb1/0x620 net/core/skbuff.c:210 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:446 netdev_alloc_skb include/linux/skbuff.h:2834 [inline] dev_alloc_skb include/linux/skbuff.h:2847 [inline] __ieee80211_beacon_get+0x3af/0x13a0 net/mac80211/tx.c:4874 ieee80211_beacon_get_tim+0x88/0x910 net/mac80211/tx.c:4988 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x8f0 drivers/net/wireless/mac80211_hwsim.c:1735 __iterate_interfaces+0x1f0/0x530 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x72/0x180 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1788 __run_hrtimer kernel/time/hrtimer.c:1583 [inline] __hrtimer_run_queues+0x5e8/0xb50 kernel/time/hrtimer.c:1647 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1664 __do_softirq+0x1b8/0x86b kernel/softirq.c:298 asm_call_irq_on_stack+0x12/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x114/0x1b0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1095 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:lock_acquire+0x1b9/0x490 kernel/locking/lockdep.c:5533 Code: 83 db 7e e8 09 91 ff ff b8 ff ff ff ff 48 83 c4 20 65 0f c1 05 28 83 db 7e 83 f8 01 4c 8b 54 24 08 0f 85 6e 02 00 00 41 52 9d <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff88803e66f528 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff11007ccdea7 RCX: 00000000198d5578 RDX: 1ffff11008a25dd5 RSI: 6403ef0d38ca4760 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff86797667 R10: 0000000000000246 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffffffff84ff80a0 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:258 [inline] rcu_read_lock include/linux/rcupdate.h:651 [inline] mod_objcg_state mm/slab.h:310 [inline] memcg_slab_free_hook mm/slab.h:383 [inline] memcg_slab_free_hook mm/slab.h:351 [inline] do_slab_free mm/slub.c:3105 [inline] ___cache_free+0x14d/0x340 mm/slub.c:3156 qlink_free mm/kasan/quarantine.c:151 [inline] qlist_free_all+0x59/0xe0 mm/kasan/quarantine.c:170 quarantine_reduce+0x184/0x210 mm/kasan/quarantine.c:267 __kasan_kmalloc.constprop.0+0xa2/0xd0 mm/kasan/common.c:442 slab_post_alloc_hook mm/slab.h:532 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x13b/0x360 mm/slub.c:2909 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x360 mm/slub.c:2909 ext4_free_blocks+0x915/0x20f0 fs/ext4/mballoc.c:5493 ext4_clear_blocks+0x346/0x480 fs/ext4/indirect.c:877 ext4_free_data+0x16f/0x390 fs/ext4/indirect.c:950 ext4_free_branches+0x51c/0x680 fs/ext4/indirect.c:1095 ext4_ind_remove_space+0xbb5/0x1390 fs/ext4/indirect.c:1406 ext4_punch_hole+0xefd/0x1110 fs/ext4/inode.c:4171 ext4_fallocate+0xdfb/0x3ca0 fs/ext4/extents.c:4705 vfs_fallocate+0x48f/0xcc0 fs/open.c:309 ksys_fallocate fs/open.c:332 [inline] __do_sys_fallocate fs/open.c:340 [inline] __se_sys_fallocate fs/open.c:338 [inline] __x64_sys_fallocate+0xcf/0x140 fs/open.c:338 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xc6 RIP: 0033:0x7f85414a9b19 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:00007f853ea1f188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f85415bcf60 RCX: 00007f85414a9b19 RDX: 000000000000e3ff RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007f8541503f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000008000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff5f655b4f R14: 00007f853ea1f300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_irq_disable arch/x86/include/asm/irqflags.h:49 [inline] NMI backtrace for cpu 1 skipped: idling at arch_local_irq_disable arch/x86/include/asm/irqflags.h:89 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle_call+0x8c/0xd0 kernel/sched/idle.c:120 ---------------- Code disassembly (best guess): 0: 01 d0 add %edx,%eax 2: 48 d1 f8 sar %rax 5: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx a: 48 89 d8 mov %rbx,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx 16: 48 89 d8 mov %rbx,%rax 19: 83 e0 07 and $0x7,%eax 1c: 83 c0 03 add $0x3,%eax 1f: 38 d0 cmp %dl,%al 21: 7c 04 jl 0x27 23: 84 d2 test %dl,%dl 25: 75 50 jne 0x77 27: 48 63 03 movslq (%rbx),%rax * 2a: 48 01 d8 add %rbx,%rax <-- trapping instruction 2d: 48 39 c1 cmp %rax,%rcx 30: 73 b0 jae 0xffffffe2 32: 4c 8d 63 fc lea -0x4(%rbx),%r12 36: 49 39 ec cmp %rbp,%r12 39: 73 b3 jae 0xffffffee 3b: 4d 29 ee sub %r13,%r14 3e: 49 rex.WB 3f: c1 .byte 0xc1