loop7: detected capacity change from 0 to 122880 isofs_fill_super: get root inode failed watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:5725] Modules linked in: irq event stamp: 9477351 hardirqs last enabled at (9477350): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (9477351): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (9458588): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (9458591): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5725 Comm: syz-executor.4 Not tainted 5.10.234 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x18a/0x1a90 arch/x86/kernel/unwind_orc.c:448 Code: ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 59 09 00 00 4c 89 e1 41 0f b6 45 35 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 11 00 <0f> 85 88 12 00 00 4d 8b 7d 48 3c 01 48 c7 c1 60 8e eb 84 49 83 df RSP: 0018:ffff88806ce095c8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 1ffff1100d9c12dd RDX: dffffc0000000000 RSI: ffffffff83c36290 RDI: ffff88806ce096a0 RBP: ffff88806ce096d5 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000032042 R11: 1ffff1100d9c12c1 R12: ffff88806ce096e8 R13: ffff88806ce096a0 R14: 1ffff1100d9c12c1 R15: 0000000000000170 FS: 00007f5c167a7700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d125000 CR3: 0000000045f28000 CR4: 0000000000350ef0 Call Trace: 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] 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] __kmalloc_node_track_caller+0x1a6/0x3b0 mm/slub.c:4496 __kmalloc_reserve net/core/skbuff.c:144 [inline] __alloc_skb+0xb1/0x5b0 net/core/skbuff.c:212 __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:1586 [inline] __hrtimer_run_queues+0x632/0xb40 kernel/time/hrtimer.c:1650 hrtimer_run_softirq+0x148/0x310 kernel/time/hrtimer.c:1667 __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 65 b3 6c 81 48 29 c6 48 89 f0 48 c1 e8 03 c6 04 28 fb e8 RSP: 0018:ffff888047f37660 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffea0000616f3f RDX: 0000000000000000 RSI: ffff88800ef5d700 RDI: ffff8880083f68c0 RBP: dffffc0000000000 R08: 000000000000000f R09: ffffffff816cb301 R10: ffff88800ef5d900 R11: 0000000000000001 R12: ffff888047f37698 R13: 0000000080000000 R14: ffffffff80000000 R15: ffff8880185bde00 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] __kmalloc+0x16e/0x390 mm/slub.c:3967 kmalloc_array include/linux/slab.h:592 [inline] kcalloc include/linux/slab.h:603 [inline] cache_create_net+0xa0/0x230 net/sunrpc/cache.c:1754 unix_gid_cache_create+0x5c/0x130 net/sunrpc/svcauth_unix.c:613 sunrpc_init_net+0x72/0x190 net/sunrpc/sunrpc_syms.c:45 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:501 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: 0033:0x7f5c19231b19 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:00007f5c167a7188 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3 RAX: ffffffffffffffda RBX: 00007f5c19344f60 RCX: 00007f5c19231b19 RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00000000200001c0 RBP: 00007f5c1928bf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffea69c954f R14: 00007f5c167a7300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:60 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:103 [inline] NMI backtrace for cpu 1 skipped: idling at default_idle+0xe/0x20 arch/x86/kernel/process.c:706 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 83 e2 07 and $0x7,%edx 3: 38 d0 cmp %dl,%al 5: 7f 08 jg 0xf 7: 84 c0 test %al,%al 9: 0f 85 59 09 00 00 jne 0x968 f: 4c 89 e1 mov %r12,%rcx 12: 41 0f b6 45 35 movzbl 0x35(%r13),%eax 17: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 1e: fc ff df 21: 48 c1 e9 03 shr $0x3,%rcx 25: 80 3c 11 00 cmpb $0x0,(%rcx,%rdx,1) * 29: 0f 85 88 12 00 00 jne 0x12b7 <-- trapping instruction 2f: 4d 8b 7d 48 mov 0x48(%r13),%r15 33: 3c 01 cmp $0x1,%al 35: 48 c7 c1 60 8e eb 84 mov $0xffffffff84eb8e60,%rcx 3c: 49 rex.WB 3d: 83 .byte 0x83 3e: df .byte 0xdf