FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.5:4761] Modules linked in: irq event stamp: 4043839 hardirqs last enabled at (4043838): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4043839): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1094 softirqs last enabled at (4026566): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4026569): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4761 Comm: syz-executor.5 Not tainted 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lockdep_init_map_type+0xa/0x780 kernel/locking/lockdep.c:4705 Code: bc 3a 45 00 e9 01 eb ff ff 48 c7 c7 f8 6e 67 85 e8 9b 3a 45 00 4c 8b 4c 24 18 e9 02 f8 ff ff 90 48 b8 00 00 00 00 00 fc ff df <41> 56 41 55 41 89 cd 41 54 49 89 d4 55 48 89 fd 48 83 c7 08 53 48 RSP: 0018:ffff88806ce09a38 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88802056e360 RCX: 0000000000000000 RDX: ffffffff86c12220 RSI: ffffffff844e4980 RDI: ffff88802056e378 RBP: ffffffff844e4980 R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff86c12220 R13: 0000000000000002 R14: ffff88802056e3b0 R15: ffff88804701c280 FS: 00007f8a98794700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d922000 CR3: 00000000495de000 CR4: 0000000000350ef0 Call Trace: lockdep_init_map_waits include/linux/lockdep.h:195 [inline] lockdep_init_map_wait include/linux/lockdep.h:202 [inline] __raw_spin_lock_init+0x36/0x110 kernel/locking/spinlock_debug.c:24 create_object.isra.0+0x11a/0xa20 mm/kmemleak.c:588 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:199 __netdev_alloc_skb+0x6e/0x360 net/core/skbuff.c:447 netdev_alloc_skb include/linux/skbuff.h:2857 [inline] dev_alloc_skb include/linux/skbuff.h:2870 [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:1094 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196 Code: ff ff ff b8 08 00 00 00 4d 8b 17 49 8b 16 48 0f bd c8 48 63 c9 e9 5e ff ff ff 4c 01 d2 49 89 17 e9 cd fd ff ff 90 48 8b 34 24 <65> 48 8b 14 25 80 6f 02 00 65 8b 05 ec cf c1 7e a9 00 01 ff 00 74 RSP: 0018:ffff88804967f9e8 EFLAGS: 00000246 RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff81748029 RDX: 0000000000000000 RSI: ffffffff81748036 RDI: 0000000000000005 RBP: ffff888008878698 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000766564 R13: 33cd97fcb2453ecc R14: ffff888047512225 R15: ffff88804967fc48 link_path_walk.part.0+0x216/0xbf0 fs/namei.c:2137 link_path_walk fs/namei.c:2120 [inline] path_openat+0x25d/0x2770 fs/namei.c:3421 do_filp_open+0x190/0x3e0 fs/namei.c:3452 do_sys_openat2+0x171/0x4d0 fs/open.c:1227 do_sys_open fs/open.c:1243 [inline] __do_sys_openat fs/open.c:1259 [inline] __se_sys_openat fs/open.c:1254 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1254 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f8a9b1d1a04 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44 RSP: 002b:00007f8a98793ed0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f8a9b268970 RCX: 00007f8a9b1d1a04 RDX: 0000000000000002 RSI: 00007f8a98794000 RDI: 00000000ffffff9c RBP: 00007f8a98794000 R08: 0000000000000000 R09: 0000034446505853 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 0000000000000007 R14: 00000000200004b8 R15: 0000000000000005 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1 Comm: systemd Not tainted 5.10.226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:rcu_lock_release include/linux/rcupdate.h:308 [inline] RIP: 0010:rcu_read_unlock include/linux/rcupdate.h:771 [inline] RIP: 0010:__is_insn_slot_addr+0x134/0x290 kernel/kprobes.c:307 Code: ff e8 10 ce a4 02 31 ff 89 c3 89 c6 e8 25 78 ff ff 85 db 0f 85 bb 00 00 00 e8 c8 7e ff ff 65 ff 0d c1 4e c1 7e e8 8c d8 ec ff b7 7e ff ff 48 c7 c6 73 20 41 81 48 c7 c7 20 8c ff 84 e8 f4 11 RSP: 0018:ffff8880088c75c0 EFLAGS: 00000287 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81412143 RDX: ffff8880088b8000 RSI: ffffffff81412078 RDI: 0000000000000001 RBP: ffffffffa0008000 R08: 0000000000000000 R09: ffffffff868686e7 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff85035bc8 R15: 0000000000000080 FS: 00007f66dae80900(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3c25c23514 CR3: 000000000ec26000 CR4: 0000000000350ee0 Call Trace: is_kprobe_optinsn_slot include/linux/kprobes.h:336 [inline] kernel_text_address kernel/extable.c:149 [inline] kernel_text_address+0xdf/0x120 kernel/extable.c:120 __kernel_text_address+0x9/0x40 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:323 [inline] unwind_get_return_address+0x55/0xa0 arch/x86/kernel/unwind_orc.c:318 arch_stack_walk+0x99/0xf0 arch/x86/kernel/stacktrace.c:26 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_trace+0x133/0x320 mm/slub.c:2921 kmalloc include/linux/slab.h:552 [inline] kernfs_get_open_node fs/kernfs/file.c:552 [inline] kernfs_fop_open+0x8d1/0xcc0 fs/kernfs/file.c:698 do_dentry_open+0x4b7/0x1090 fs/open.c:817 do_open fs/namei.c:3307 [inline] path_openat+0x19ba/0x2770 fs/namei.c:3425 do_filp_open+0x190/0x3e0 fs/namei.c:3452 do_sys_openat2+0x171/0x4d0 fs/open.c:1227 do_sys_open fs/open.c:1243 [inline] __do_sys_openat fs/open.c:1259 [inline] __se_sys_openat fs/open.c:1254 [inline] __x64_sys_openat+0x13f/0x1f0 fs/open.c:1254 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f66db64dc64 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 36 61 f9 ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 68 61 f9 ff 8b 44 RSP: 002b:00007ffed615d630 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055f545c53bf0 RCX: 00007f66db64dc64 RDX: 0000000000080000 RSI: 000055f545c7d3d0 RDI: 00000000ffffff9c RBP: 000055f545c7d3d0 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080000 R13: 000055f545c53bf0 R14: 0000000000000001 R15: 00007ffed615da40 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 3a 45 00 cmp 0x0(%rbp),%al 3: e9 01 eb ff ff jmpq 0xffffeb09 8: 48 c7 c7 f8 6e 67 85 mov $0xffffffff85676ef8,%rdi f: e8 9b 3a 45 00 callq 0x453aaf 14: 4c 8b 4c 24 18 mov 0x18(%rsp),%r9 19: e9 02 f8 ff ff jmpq 0xfffff820 1e: 90 nop 1f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 26: fc ff df * 29: 41 56 push %r14 <-- trapping instruction 2b: 41 55 push %r13 2d: 41 89 cd mov %ecx,%r13d 30: 41 54 push %r12 32: 49 89 d4 mov %rdx,%r12 35: 55 push %rbp 36: 48 89 fd mov %rdi,%rbp 39: 48 83 c7 08 add $0x8,%rdi 3d: 53 push %rbx 3e: 48 rex.W