sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:4462] Modules linked in: irq event stamp: 5163477 hardirqs last enabled at (5163476): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5163477): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (5161020): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5161023): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4462 Comm: syz-executor.3 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_beacon_tx+0x3a9/0x940 drivers/net/wireless/mac80211_hwsim.c:1764 Code: 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 57 05 00 00 b8 80 07 00 00 49 8d 7f 18 99 f7 3c 24 <48> ba 00 00 00 00 00 fc ff df 48 98 49 01 c6 48 89 f8 4d 03 b5 e0 RSP: 0018:ffff88806cf09d38 EFLAGS: 00000212 RAX: 00000000000000c0 RBX: ffff888046ba0d00 RCX: ffffffff82ca09a7 RDX: 0000000000000000 RSI: ffffffff82ca09ba RDI: ffff8880493f7868 RBP: ffff888009a9a140 R08: 0000000000000001 R09: ffffffff8686c6bf R10: 000000000000001c R11: 0000000000000001 R12: ffff888046521d98 R13: ffff888046ba31c0 R14: 000636bd203db28a R15: ffff8880493f7850 FS: 00007f4f38dcb700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3435b3c000 CR3: 000000004bdf6000 CR4: 0000000000350ee0 Call Trace: __iterate_interfaces+0x1f0/0x550 net/mac80211/util.c:792 ieee80211_iterate_active_interfaces_atomic+0x71/0x1c0 net/mac80211/util.c:828 mac80211_hwsim_beacon+0xd1/0x1d0 drivers/net/wireless/mac80211_hwsim.c:1793 __run_hrtimer kernel/time/hrtimer.c:1588 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1652 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1669 __do_softirq+0x1b8/0x7c9 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:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:cmpxchg_double_slab mm/slub.c:402 [inline] RIP: 0010:__slab_free+0xb5/0x5d0 mm/slub.c:3023 Code: 85 ed 89 c6 41 0f 94 c1 66 45 85 ff 74 08 45 31 f6 45 84 c9 74 0c 45 31 f6 40 84 f6 0f 84 e7 00 00 00 48 8b 8c 24 88 00 00 00 <41> f6 40 0b 40 74 61 48 83 7c 24 50 00 0f 85 0a 03 00 00 48 89 da RSP: 0018:ffff88801cd5f040 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000080070005 RCX: 0000000080070004 RDX: ffff88804755a200 RSI: 0000000000000001 RDI: ffff8880083fadc0 RBP: ffff88801cd5f118 R08: ffff8880083fadc0 R09: ffffffff816cc600 R10: ffff88804755a200 R11: 0000000000000001 R12: ffffea00011d5600 R13: ffff888047559100 R14: 0000000000000000 R15: 0000000080070004 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/0x310 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+0x159/0x310 mm/slub.c:2909 kmem_cache_zalloc include/linux/slab.h:654 [inline] __kernfs_new_node+0xd4/0x860 fs/kernfs/dir.c:635 kernfs_new_node+0x18d/0x250 fs/kernfs/dir.c:711 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:985 sysfs_add_file_mode_ns+0x221/0x560 fs/sysfs/file.c:306 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x324/0xb30 fs/sysfs/group.c:149 internal_create_groups.part.0+0x90/0x140 fs/sysfs/group.c:189 internal_create_groups fs/sysfs/group.c:185 [inline] sysfs_create_groups+0x25/0x50 fs/sysfs/group.c:215 device_add_groups drivers/base/core.c:2095 [inline] device_add_attrs drivers/base/core.c:2254 [inline] device_add+0x138f/0x1c50 drivers/base/core.c:2962 netdev_register_kobject+0x17a/0x3b0 net/core/net-sysfs.c:1997 register_netdevice+0xd73/0x1480 net/core/dev.c:10049 register_netdev+0x2d/0x50 net/core/dev.c:10173 sit_init_net+0x27f/0x520 net/ipv6/sit.c:1916 ops_init+0xbb/0x6b0 net/core/net_namespace.c:156 setup_net+0x2f4/0x900 net/core/net_namespace.c:348 copy_net_ns+0x2c0/0x5d0 net/core/net_namespace.c:518 create_new_namespaces+0x3f6/0xb20 kernel/nsproxy.c:110 copy_namespaces+0x3fb/0x4f0 kernel/nsproxy.c:179 copy_process+0x385b/0x7800 kernel/fork.c:2129 kernel_clone+0xe7/0x980 kernel/fork.c:2506 __do_sys_clone3+0x1e5/0x320 kernel/fork.c:2781 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f4f3b855b19 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:00007f4f38dcb188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f4f3b968f60 RCX: 00007f4f3b855b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007f4f3b8aff6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd4ce6b20f R14: 00007f4f38dcb300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 0 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:711 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 9: fc ff df c: 48 89 fa mov %rdi,%rdx f: 48 c1 ea 03 shr $0x3,%rdx 13: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 17: 0f 85 57 05 00 00 jne 0x574 1d: b8 80 07 00 00 mov $0x780,%eax 22: 49 8d 7f 18 lea 0x18(%r15),%rdi 26: 99 cltd 27: f7 3c 24 idivl (%rsp) * 2a: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx <-- trapping instruction 31: fc ff df 34: 48 98 cltq 36: 49 01 c6 add %rax,%r14 39: 48 89 f8 mov %rdi,%rax 3c: 4d rex.WRB 3d: 03 .byte 0x3 3e: b5 e0 mov $0xe0,%ch