watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.6:61210] Modules linked in: irq event stamp: 4946339 hardirqs last enabled at (4946338): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4946339): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4941670): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4941673): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 61210 Comm: syz-executor.6 Not tainted 6.1.0-rc8-next-20221207 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0xc5/0x2130 Code: 00 00 49 8b 46 48 bf 01 00 00 00 48 89 44 24 10 e8 f0 3e 0f 00 48 b8 00 00 00 00 00 fc ff df 4d 8d 6e 60 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 ca 17 00 00 4d 8b 66 60 4d 85 e4 74 32 49 8d bc RSP: 0018:ffff88806cf095f0 EFLAGS: 00000212 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffffffff0f376f8 RDX: 1ffff1100d9e12da RSI: ffffffff81369181 RDI: 0000000000000001 RBP: ffff88806cf096c8 R08: ffffffff86039ca0 R09: ffffffff86039ca4 R10: ffff88806cf09ff8 R11: ffff88806cf096b0 R12: ffff88806cf09738 R13: ffff88806cf096d0 R14: ffff88806cf09670 R15: 0000000000000170 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555754dc58 CR3: 000000001c372000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc10 kmem_cache_alloc_node+0x283/0x420 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/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/0xba0 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:__sanitizer_cov_trace_pc+0x4/0x70 Code: 00 e8 a0 ff ff ff 31 c0 e9 bd de f8 02 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <65> 8b 05 dd 37 ba 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffff88803741f0b8 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffffea00010ba700 RCX: ffffffff815feda0 RDX: ffff888042a93580 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffea00010ba734 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 __filemap_get_folio+0x7d7/0xc90 pagecache_get_page+0x2e/0x130 __find_get_block+0x447/0xc00 __getblk_gfp+0x2c/0x80 __ext4_get_inode_loc+0x4ab/0x13b0 ext4_get_inode_loc+0xbe/0x160 ext4_reserve_inode_write+0xce/0x280 __ext4_mark_inode_dirty+0x15e/0x880 ext4_dirty_inode+0xdd/0x130 __mark_inode_dirty+0x1aa/0xe70 generic_update_time+0x21b/0x2b0 file_modified_flags+0x2d4/0x330 ext4_buffered_write_iter+0xf9/0x460 ext4_file_write_iter+0x3ff/0x1930 __kernel_write_iter+0x264/0x740 __kernel_write+0xcb/0x110 do_acct_process+0xd8a/0x13d0 acct_process+0x3d4/0x500 do_exit+0x17b0/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21b7/0x22f0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f292f7efb19 Code: Unable to access opcode bytes at 0x7f292f7efaef. RSP: 002b:00007f292cd65188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 00007f292f902f60 RCX: 00007f292f7efb19 RDX: 0000000020000340 RSI: 000000004004662b RDI: 0000000000000006 RBP: 00007f292f849f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff6f9abe2f R14: 00007f292cd65300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc8-next-20221207 #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 be 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: ffffffff84420f8b RDX: fffffbfff0b483a1 RSI: 0000000000000004 RDI: ffffffff85a41d00 RBP: ffffffff85a41d00 R08: 0000000000000000 R09: ffffffff85a41d03 R10: fffffbfff0b483a0 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b483a0 R14: 0000000000000001 R15: 1ffff1100d9c1346 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdf42f1cb8 CR3: 0000000018e5e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 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/0xba0 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: 04 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 e3 92 40 00 fb f4 60 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: ffffffff8441eb50 RBX: ffffffff854328c0 RCX: ffffffff843ff5d2 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88806ce34f03 R10: ffffed100d9c69e0 R11: 0000000000000001 R12: fffffbfff0a86518 R13: ffffffff85d07c10 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: 00 00 add %al,(%rax) 2: 49 8b 46 48 mov 0x48(%r14),%rax 6: bf 01 00 00 00 mov $0x1,%edi b: 48 89 44 24 10 mov %rax,0x10(%rsp) 10: e8 f0 3e 0f 00 callq 0xf3f05 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 4d 8d 6e 60 lea 0x60(%r14),%r13 23: 4c 89 ea mov %r13,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 ca 17 00 00 jne 0x17fe 34: 4d 8b 66 60 mov 0x60(%r14),%r12 38: 4d 85 e4 test %r12,%r12 3b: 74 32 je 0x6f 3d: 49 rex.WB 3e: 8d .byte 0x8d 3f: bc .byte 0xbc