watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.3:4787] Modules linked in: irq event stamp: 4602111 hardirqs last enabled at (4602110): [] asm_sysvec_apic_timer_interrupt+0x16/0x20 hardirqs last disabled at (4602111): [] sysvec_apic_timer_interrupt+0xb/0xc0 softirqs last enabled at (4583716): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4583719): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 4787 Comm: syz-executor.3 Not tainted 5.19.0-rc8-next-20220728 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:rcu_is_watching+0x56/0xb0 Code: 48 89 f9 48 c1 e9 03 80 3c 11 00 75 62 48 03 1c c5 e0 d8 13 85 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 2a 8b 03 c1 e8 02 RSP: 0018:ffff88806ce099e0 EFLAGS: 00000216 RAX: dffffc0000000000 RBX: ffff88806ce33b50 RCX: 1ffffffff0a27b1c RDX: 0000000000000000 RSI: 0000000000000103 RDI: ffffffff8513d8e0 RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000000f R10: 000000000000000b R11: 0000000000000001 R12: ffff88802148a650 R13: ffff88806ce09af0 R14: ffff88802148a298 R15: 0000000000000001 FS: 00007f85ca1f3700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000004 CR3: 0000000047ca6000 CR4: 0000000000350ef0 Call Trace: rcu_read_lock_held+0x1c/0x50 mac80211_hwsim_addr_iter+0xcd/0x1b0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 mac80211_hwsim_addr_match+0x128/0x180 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb93/0x1440 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x562/0xaa0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 mac80211_hwsim_beacon+0x101/0x200 __hrtimer_run_queues+0x5de/0xbd0 hrtimer_run_softirq+0x172/0x340 __do_softirq+0x1c8/0x8d0 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x5/0x20 sysvec_apic_timer_interrupt+0x8e/0xc0 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0010:unwind_next_frame+0x15a9/0x20b0 Code: 08 00 00 49 8d 7e 08 49 8b 5e 48 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a5 06 00 00 49 8d 7e 10 <49> 8b 6e 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 RSP: 0018:ffff888040ad76c0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff888040ad7d68 RCX: 0000000000000001 RDX: 1ffff1100815aee9 RSI: ffff888040ad7d48 RDI: ffff888040ad7750 RBP: ffffffff855f7a80 R08: ffffffff85ef7f4a R09: ffffffff85ef7f4e R10: ffffed100815aef5 R11: ffff888040ad7780 R12: ffff888040ad7781 R13: ffff888040ad77a0 R14: ffff888040ad7740 R15: 0000000000000007 arch_stack_walk+0x83/0xf0 stack_trace_save+0x8c/0xc0 kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_set_free_info+0x20/0x40 __kasan_slab_free+0x108/0x190 kmem_cache_free+0xfb/0x610 kernfs_put.part.0+0x2c7/0x540 kernfs_put+0x42/0x50 __kernfs_remove+0x7d4/0xb30 kernfs_remove_by_name_ns+0xa8/0x110 remove_files+0x96/0x1c0 sysfs_remove_group+0x87/0x170 sysfs_remove_groups+0x5c/0xa0 __kobject_del+0x8b/0x320 kobject_del+0x3c/0x60 blk_unregister_queue+0x15d/0x290 del_gendisk+0x37e/0xa50 loop_control_ioctl+0x451/0x620 __x64_sys_ioctl+0x19a/0x210 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f85ccc7db19 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:00007f85ca1f3188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f85ccd90f60 RCX: 00007f85ccc7db19 RDX: 0000000000000002 RSI: 0000000000004c81 RDI: 0000000000000006 RBP: 00007f85cccd7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffd50388af R14: 00007f85ca1f3300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.19.0-rc8-next-20220728 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x124/0xc80 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 cd 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 0e e8 35 03 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff88806cf09a08 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff812a51f7 RDX: fffffbfff0b072f5 RSI: 0000000000000004 RDI: ffffffff858397a0 RBP: ffffffff858397a0 R08: 0000000000000000 R09: ffffffff858397a3 R10: fffffbfff0b072f4 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b072f4 R14: 0000000000000001 R15: 1ffff1100d9e1342 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000657000 CR3: 00000000172fa000 CR4: 0000000000350ee0 Call Trace: do_raw_spin_lock+0x1dc/0x260 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1440 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x562/0xaa0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x70/0x180 mac80211_hwsim_beacon+0x101/0x200 __hrtimer_run_queues+0x5de/0xbd0 hrtimer_run_softirq+0x172/0x340 __do_softirq+0x1c8/0x8d0 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x5/0x20 sysvec_apic_timer_interrupt+0x8e/0xc0 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0010:default_idle+0xb/0x10 Code: c2 fe ff 4c 89 e2 48 89 ef 31 f6 5d 41 5c e9 2c 14 1b fe cc cc cc cc cc cc cc cc cc cc cc cc eb 07 0f 00 2d b7 99 62 00 fb f4 30 5d 40 00 41 54 be 08 00 00 00 53 65 48 8b 1c 25 c0 6e 02 00 RSP: 0018:ffff888008687e58 EFLAGS: 00000206 RAX: ffffffff841fdd40 RBX: ffff888008655100 RCX: ffffffff841dfbc2 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000001 R09: ffff88806cf33b53 R10: ffffed100d9e676a R11: 0000000000000001 R12: ffffed10010caa20 R13: ffffffff85aed790 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x84/0xc0 do_idle+0x3bd/0x530 cpu_startup_entry+0x14/0x20 start_secondary+0x1c8/0x220 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess): 0: 48 89 f9 mov %rdi,%rcx 3: 48 c1 e9 03 shr $0x3,%rcx 7: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) b: 75 62 jne 0x6f d: 48 03 1c c5 e0 d8 13 add -0x7aec2720(,%rax,8),%rbx 14: 85 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 89 da mov %rbx,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 14 02 movzbl (%rdx,%rax,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 2a jne 0x65 3b: 8b 03 mov (%rbx),%eax 3d: c1 e8 02 shr $0x2,%eax