watchdog: BUG: soft lockup - CPU#1 stuck for 21s! [syz-executor.6:8786] Modules linked in: irq event stamp: 3232693 hardirqs last enabled at (3232692): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3232693): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3201016): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3201019): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 8786 Comm: syz-executor.6 Not tainted 6.2.0-rc1-next-20221226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x7e9/0x1360 Code: bb e8 bb 4d 4c fe 48 8d bb 08 3d 00 00 48 89 f8 48 c1 e8 03 0f b6 04 28 84 c0 74 06 0f 8e ea 08 00 00 44 0f b6 bb 08 3d 00 00 <31> ff 44 89 fe e8 5d 49 4c fe 45 84 ff 74 83 e8 83 4d 4c fe 48 8d RSP: 0018:ffff88806cf09b80 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff8880348033a0 RCX: 0000000000000100 RDX: ffff88800ef83580 RSI: ffffffff82fc8fc5 RDI: ffff8880348070a8 RBP: dffffc0000000000 R08: 0000000000000004 R09: 0000000000000006 R10: 0000000000000002 R11: 0000000000000001 R12: ffff88801e792dc0 R13: ffff888044ce33a0 R14: ffff888044ce3638 R15: 0000000000000001 FS: 00007fb8021be700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 000000000ef60000 CR4: 0000000000350ee0 Call Trace: mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xc70 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:ip_finish_output2+0x73c/0x1fb0 Code: fd 48 c7 c6 7a 20 7a 83 48 c7 c7 80 85 60 85 e8 9a b8 b1 fd e8 e5 bc ce fd be 00 02 00 00 48 c7 c7 7e 20 7a 83 e8 54 ec 9d fd cf bc ce fd 48 8b 0c 24 48 b8 00 00 00 00 00 fc ff df 48 c7 04 RSP: 0018:ffff8880478173e8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff812b3b2f RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000050 R08: 0000000000000001 R09: ffffffff8763294f R10: fffffbfff0ec6529 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888043a8ed50 R14: ffff888043a8ed58 R15: 0000000000000010 ip_do_fragment+0x1e14/0x24e0 ip_fragment.constprop.0+0x16b/0x240 __ip_finish_output.part.0+0x883/0xd10 ip_output+0x2ec/0x8e0 ip_push_pending_frames+0x30b/0x5c0 raw_sendmsg+0x11b0/0x2b40 inet_sendmsg+0x121/0x150 sock_sendmsg+0x140/0x190 ____sys_sendmsg+0x744/0x930 ___sys_sendmsg+0x110/0x1b0 __sys_sendmsg+0xf7/0x1d0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb804c48b19 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:00007fb8021be188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fb804d5bf60 RCX: 00007fb804c48b19 RDX: 0000000000000000 RSI: 0000000020000780 RDI: 0000000000000004 RBP: 00007fb804ca2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe7cc6dcef R14: 00007fb8021be300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc1-next-20221226 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc80 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 cd 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 de 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff88806ce09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8440b92b RDX: fffffbfff0b48571 RSI: 0000000000000004 RDI: ffffffff85a42b80 RBP: ffffffff85a42b80 R08: 0000000000000000 R09: ffffffff85a42b83 R10: fffffbfff0b48570 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48570 R14: 0000000000000001 R15: 1ffff1100d9c1346 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c131765018 CR3: 000000000e06a000 CR4: 0000000000350ef0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xc70 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: 70 01 fe cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 43 e9 41 00 fb f4 80 44 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 RSP: 0018:ffffffff85407e20 EFLAGS: 00000202 RAX: ffffffff844094f0 RBX: ffffffff854328c0 RCX: ffffffff843ea842 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88806ce34f03 R10: ffffed100d9c69e0 R11: 0000000000000001 R12: fffffbfff0a86518 R13: ffffffff85d09410 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x88/0xd0 do_idle+0x3bd/0x530 cpu_startup_entry+0x18/0x20 rest_init+0x166/0x260 arch_call_rest_init+0x13/0x2c start_kernel+0x4a2/0x4c7 secondary_startup_64_no_verify+0xe0/0xeb ---------------- Code disassembly (best guess): 0: bb e8 bb 4d 4c mov $0x4c4dbbe8,%ebx 5: fe 48 8d decb -0x73(%rax) 8: bb 08 3d 00 00 mov $0x3d08,%ebx d: 48 89 f8 mov %rdi,%rax 10: 48 c1 e8 03 shr $0x3,%rax 14: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax 18: 84 c0 test %al,%al 1a: 74 06 je 0x22 1c: 0f 8e ea 08 00 00 jle 0x90c 22: 44 0f b6 bb 08 3d 00 movzbl 0x3d08(%rbx),%r15d 29: 00 * 2a: 31 ff xor %edi,%edi <-- trapping instruction 2c: 44 89 fe mov %r15d,%esi 2f: e8 5d 49 4c fe callq 0xfe4c4991 34: 45 84 ff test %r15b,%r15b 37: 74 83 je 0xffffffbc 39: e8 83 4d 4c fe callq 0xfe4c4dc1 3e: 48 rex.W 3f: 8d .byte 0x8d