wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready loop3: detected capacity change from 0 to 16777216 watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.0:4463] Modules linked in: irq event stamp: 5173691 hardirqs last enabled at (5173690): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (5173691): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (5165822): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (5165825): [] asm_call_irq_on_stack+0x12/0x20 CPU: 1 PID: 4463 Comm: syz-executor.0 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xdda/0x1a90 arch/x86/kernel/unwind_orc.c:605 Code: 71 02 4c 89 ef 48 01 ee e8 e3 f0 ff ff 84 c0 0f 84 92 f6 ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e 41 08 00 00 41 3b 5d 00 0f 84 16 05 00 00 RSP: 0018:ffff88806cf09870 EFLAGS: 00000212 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 1ffff1100d9e1331 RDX: 1ffff1100d9e1329 RSI: ffff88806cf09db8 RDI: ffff88806cf09db8 RBP: ffff88806cf0997d R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9e1316 R12: ffff88806cf09de8 R13: ffff88806cf09948 R14: 1ffff1100d9e1316 R15: ffffffff85d1912e FS: 00007f6513ba8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7de60c14c0 CR3: 0000000047b34000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x83/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 __save_stack_trace mm/kmemleak.c:563 [inline] create_object.isra.0+0x372/0xa20 mm/kmemleak.c:618 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] kmem_cache_alloc_node+0x169/0x330 mm/slub.c:2932 __alloc_skb+0x6d/0x5b0 net/core/skbuff.c:200 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:448 netdev_alloc_skb include/linux/skbuff.h:2855 [inline] dev_alloc_skb include/linux/skbuff.h:2868 [inline] __ieee80211_beacon_get+0x3af/0x1440 net/mac80211/tx.c:4876 ieee80211_beacon_get_tim+0x88/0x9f0 net/mac80211/tx.c:4990 ieee80211_beacon_get include/net/mac80211.h:4912 [inline] mac80211_hwsim_beacon_tx+0x111/0x940 drivers/net/wireless/mac80211_hwsim.c:1740 __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:qlink_free mm/kasan/quarantine.c:151 [inline] RIP: 0010:qlist_free_all+0x3f/0xe0 mm/kasan/quarantine.c:170 Code: a3 00 00 00 49 89 fc 41 bd 00 00 00 80 49 c7 c6 00 00 00 80 48 bd 00 00 00 00 00 fc ff df eb 2c 48 63 87 c0 00 00 00 4c 8b 3e <48> c7 c2 05 c6 6c 81 48 29 c6 48 89 f0 48 c1 e8 03 c6 04 28 fb e8 RSP: 0018:ffff88803bc17668 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffea000054b5ff RDX: 0000000000000000 RSI: ffff88801814ef80 RDI: ffff888008041a00 RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff816cc600 R10: ffff88801814e780 R11: 0000000000000001 R12: ffff88803bc176a0 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff88801814ef40 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] __kmalloc+0x150/0x390 mm/slub.c:3967 kmalloc include/linux/slab.h:557 [inline] kzalloc include/linux/slab.h:664 [inline] new_dir fs/proc/proc_sysctl.c:954 [inline] get_subdir fs/proc/proc_sysctl.c:999 [inline] __register_sysctl_table+0x9ef/0x1090 fs/proc/proc_sysctl.c:1348 sysctl_core_net_init+0xe1/0x1f0 net/core/sysctl_net_core.c:627 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: 0033:0x7f6516632b19 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:00007f6513ba8188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f6516745f60 RCX: 00007f6516632b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007f651668cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc0d06bf1f R14: 00007f6513ba8300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 298 Comm: kworker/0:3 Not tainted 5.10.237 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: events_freezable_power_ disk_events_workfn RIP: 0010:iowrite8+0x57/0xa0 lib/iomap.c:192 Code: bf 2f 4c ff e8 ba 2f 4c ff 48 89 ee bf 00 00 01 00 e8 1d 29 4c ff 48 81 fd 00 00 01 00 76 12 e8 9f 2f 4c ff 0f b7 d5 89 d8 ee <5b> 5d e9 92 2f 4c ff e8 8d 2f 4c ff 8b 1d e7 82 29 03 31 ff 89 de RSP: 0018:ffff88801754f308 EFLAGS: 00000093 RAX: 00000000000000a0 RBX: 00000000000000a0 RCX: ffffffff81f48d33 RDX: 0000000000000176 RSI: ffffffff81f48d41 RDI: 0000000000000007 RBP: 0000000000010176 R08: 0000000000000000 R09: 0000000000006d2c R10: 0000000000010000 R11: 0000000000000001 R12: 0000000000000004 R13: ffff88800f4d8050 R14: ffff88800f4d8048 R15: ffff88800f4d8060 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559abfc6b52c CR3: 000000000cc3a000 CR4: 0000000000350ef0 Call Trace: ata_sff_tf_load+0x77c/0x9a0 drivers/ata/libata-sff.c:435 ata_tf_to_host drivers/ata/libata-sff.c:519 [inline] ata_sff_qc_issue+0x374/0x860 drivers/ata/libata-sff.c:1421 ata_bmdma_qc_issue+0x462/0x590 drivers/ata/libata-sff.c:2749 ata_qc_issue+0x620/0xc40 drivers/ata/libata-core.c:4856 ata_scsi_translate drivers/ata/libata-scsi.c:1736 [inline] __ata_scsi_queuecmd+0x5a3/0xda0 drivers/ata/libata-scsi.c:4093 ata_scsi_queuecmd+0xad/0x190 drivers/ata/libata-scsi.c:4142 scsi_dispatch_cmd drivers/scsi/scsi_lib.c:1526 [inline] scsi_queue_rq+0x13e3/0x27f0 drivers/scsi/scsi_lib.c:1691 blk_mq_dispatch_rq_list+0x372/0x1c40 block/blk-mq.c:1389 __blk_mq_sched_dispatch_requests+0x263/0x450 block/blk-mq-sched.c:315 blk_mq_sched_dispatch_requests+0xfd/0x1e0 block/blk-mq-sched.c:348 __blk_mq_run_hw_queue+0x12c/0x290 block/blk-mq.c:1538 __blk_mq_delay_run_hw_queue+0x53f/0x5a0 block/blk-mq.c:1615 blk_mq_run_hw_queue+0x170/0x2f0 block/blk-mq.c:1668 blk_mq_sched_insert_request+0x384/0x440 block/blk-mq-sched.c:476 blk_execute_rq+0xd4/0x1c0 block/blk-exec.c:86 __scsi_execute+0x28e/0x630 drivers/scsi/scsi_lib.c:272 scsi_execute_req include/scsi/scsi_device.h:461 [inline] sr_get_events drivers/scsi/sr.c:208 [inline] sr_check_events+0x182/0x9d0 drivers/scsi/sr.c:248 cdrom_update_events drivers/cdrom/cdrom.c:1484 [inline] cdrom_check_events+0x64/0x110 drivers/cdrom/cdrom.c:1494 sr_block_check_events+0x1b0/0x2c0 drivers/scsi/sr.c:666 disk_check_events+0x137/0x5f0 block/genhd.c:2139 process_one_work+0x9a9/0x14b0 kernel/workqueue.c:2282 worker_thread+0x61d/0x1310 kernel/workqueue.c:2428 kthread+0x38f/0x470 kernel/kthread.c:328 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:298 ---------------- Code disassembly (best guess): 0: 71 02 jno 0x4 2: 4c 89 ef mov %r13,%rdi 5: 48 01 ee add %rbp,%rsi 8: e8 e3 f0 ff ff callq 0xfffff0f0 d: 84 c0 test %al,%al f: 0f 84 92 f6 ff ff je 0xfffff6a7 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 4c 89 ea mov %r13,%rdx 22: 48 c1 ea 03 shr $0x3,%rdx 26: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 2a: 84 c0 test %al,%al <-- trapping instruction 2c: 74 08 je 0x36 2e: 3c 03 cmp $0x3,%al 30: 0f 8e 41 08 00 00 jle 0x877 36: 41 3b 5d 00 cmp 0x0(%r13),%ebx 3a: 0f 84 16 05 00 00 je 0x556