watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:4428] Modules linked in: irq event stamp: 4848597 hardirqs last enabled at (4848596): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 hardirqs last disabled at (4848597): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1106 softirqs last enabled at (4847418): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (4847421): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 4428 Comm: syz-executor.2 Not tainted 5.10.234 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:ieee80211_drop_unencrypted_mgmt net/mac80211/rx.c:2463 [inline] RIP: 0010:ieee80211_rx_h_mgmt_check net/mac80211/rx.c:3208 [inline] RIP: 0010:ieee80211_rx_handlers+0x3ba4/0xa3f0 net/mac80211/rx.c:3882 Code: c0 01 00 00 be 08 00 00 00 48 89 ef e8 a5 97 ad fd 48 89 e8 48 c1 e8 03 42 80 3c 28 00 0f 85 07 3b 00 00 48 8b 9b c0 01 00 00 <31> ff c0 eb 07 89 de e8 90 be 81 fd 84 db 0f 85 46 2e 00 00 e8 73 RSP: 0018:ffff88806ce09918 EFLAGS: 00000246 RAX: 1ffff11008e0d038 RBX: 000000000030000b RCX: ffffffff83bef26b RDX: ffffed1008e0d039 RSI: 0000000000000008 RDI: ffff8880470681c0 RBP: ffff8880470681c0 R08: 0000000000000000 R09: ffff8880470681c7 R10: ffffed1008e0d038 R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88806ce09d98 R15: ffff888019df0450 FS: 00007f81c10b0700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d531000 CR3: 0000000048ed0000 CR4: 0000000000350ef0 Call Trace: ieee80211_invoke_rx_handlers net/mac80211/rx.c:3918 [inline] ieee80211_prepare_and_rx_handle+0x17d4/0x5890 net/mac80211/rx.c:4605 __ieee80211_rx_handle_packet net/mac80211/rx.c:4666 [inline] ieee80211_rx_list+0xdd0/0x2370 net/mac80211/rx.c:4846 ieee80211_rx_napi+0xdc/0x3c0 net/mac80211/rx.c:4867 ieee80211_rx include/net/mac80211.h:4502 [inline] ieee80211_tasklet_handler+0xd3/0x130 net/mac80211/main.c:237 tasklet_action_common.constprop.0+0x244/0x2f0 kernel/softirq.c:560 __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:__crc32c_le_base+0x2/0x30 lib/crc32.c:201 Code: 89 f4 55 89 fd e8 ee 9d 4b ff 4c 89 ea 4c 89 e6 89 ef 48 c7 c1 40 27 5c 84 5d 41 5c 41 5d e9 d5 f9 ff ff 0f 1f 44 00 00 41 55 <49> 89 d5 41 54 49 89 f4 55 89 fd e8 be 9d 4b ff 4c 89 ea 4c 89 e6 RSP: 0018:ffff8880170874e8 EFLAGS: 00000246 RAX: 0000000000000003 RBX: ffff8880170875a0 RCX: 0000000000000000 RDX: 0000000000000002 RSI: ffff888017087580 RDI: 00000000e3099df0 RBP: ffff8880170875a8 R08: 0000000000000000 R09: 000000005903620e R10: 0000000000000000 R11: 0000000000000000 R12: ffff888017087580 R13: 0000000000000002 R14: 0000000000000000 R15: ffff88800cd11300 chksum_update+0x4c/0xb0 crypto/crc32c_generic.c:88 crypto_shash_update+0xca/0x120 crypto/shash.c:131 ext4_chksum fs/ext4/ext4.h:2302 [inline] ext4_group_desc_csum+0x3a6/0x7e0 fs/ext4/super.c:2821 ext4_group_desc_csum_set+0xc3/0x190 fs/ext4/super.c:2864 __ext4_new_inode+0x1ca6/0x5370 fs/ext4/ialloc.c:1230 ext4_create+0x2ce/0x4d0 fs/ext4/namei.c:2731 lookup_open.isra.0+0xea8/0x1270 fs/namei.c:3163 open_last_lookups fs/namei.c:3233 [inline] path_openat+0x972/0x2770 fs/namei.c:3422 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: 0033:0x7f81c3b3ab19 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:00007f81c10b0188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f81c3c4df60 RCX: 00007f81c3b3ab19 RDX: 0000000000000042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f81c3b94f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe6013617f R14: 00007f81c10b0300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4454 Comm: syz-executor.1 Not tainted 5.10.234 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:19 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:100 [inline] RIP: 0010:queued_spin_lock_slowpath+0x122/0x8c0 kernel/locking/qspinlock.c:326 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 09 07 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 e0 8f f8 02 f3 90 73 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e1 00 00 RSP: 0018:ffff88800fe5fa40 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff88800e4b0040 RCX: ffffffff8127af67 RDX: ffffed1001c96009 RSI: 0000000000000004 RDI: ffff88800e4b0040 RBP: 0000000000000001 R08: 0000000000000000 R09: ffff88800e4b0043 R10: ffffed1001c96008 R11: 0000000000000001 R12: 0000000000000003 R13: ffffed1001c96008 R14: 0000000000000001 R15: 1ffff11001fcbf49 FS: 0000555579bc8400(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faa221f0019 CR3: 000000000fbee000 CR4: 0000000000350ee0 Call Trace: queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock+0x1dc/0x260 kernel/locking/spinlock_debug.c:113 spin_lock include/linux/spinlock.h:354 [inline] ext4_lock_group fs/ext4/ext4.h:3359 [inline] __ext4_new_inode+0x2c76/0x5370 fs/ext4/ialloc.c:1096 ext4_symlink+0x492/0xc70 fs/ext4/namei.c:3446 vfs_symlink fs/namei.c:4015 [inline] vfs_symlink+0x369/0x5d0 fs/namei.c:4001 do_symlinkat+0x13c/0x280 fs/namei.c:4042 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7faa22195427 Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 58 00 00 00 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:00007ffd9ebe8138 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007faa22195427 RDX: 00007ffd9ebe8217 RSI: 00007faa221f0019 RDI: 00007ffd9ebe8200 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd9ebe7fd0 R10: 00007ffd9ebe7e87 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd9ebe8200 ---------------- Code disassembly (best guess): 0: c0 01 00 rolb $0x0,(%rcx) 3: 00 be 08 00 00 00 add %bh,0x8(%rsi) 9: 48 89 ef mov %rbp,%rdi c: e8 a5 97 ad fd callq 0xfdad97b6 11: 48 89 e8 mov %rbp,%rax 14: 48 c1 e8 03 shr $0x3,%rax 18: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 1d: 0f 85 07 3b 00 00 jne 0x3b2a 23: 48 8b 9b c0 01 00 00 mov 0x1c0(%rbx),%rbx * 2a: 31 ff xor %edi,%edi <-- trapping instruction 2c: c0 eb 07 shr $0x7,%bl 2f: 89 de mov %ebx,%esi 31: e8 90 be 81 fd callq 0xfd81bec6 36: 84 db test %bl,%bl 38: 0f 85 46 2e 00 00 jne 0x2e84 3e: e8 .byte 0xe8 3f: 73 .byte 0x73