watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.6:8381] Modules linked in: irq event stamp: 5241013 hardirqs last enabled at (5241012): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5241013): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (5235566): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (5235569): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 8381 Comm: syz-executor.6 Not tainted 6.2.0-rc3-next-20230110 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_acquire.part.0+0x14d/0x340 Code: 87 84 48 83 c4 20 e8 62 3d 16 03 b8 ff ff ff ff 65 0f c1 05 b5 67 d6 7e 83 f8 01 0f 85 9f 01 00 00 48 85 ed 0f 85 90 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7 RSP: 0018:ffff88806ce09b08 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff1100d9c1363 RCX: 00000000fdbb4db1 RDX: 1ffff11001f04b33 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000000200 R08: 0000000000000000 R09: ffffffff87652907 R10: fffffbfff0eca520 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8560ace0 FS: 00007f82c0910700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f831000 CR3: 00000000432d2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __ieee80211_beacon_get+0x4d/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d2/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __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:qlist_free_all+0xb3/0x1a0 Code: 0f 82 f8 00 00 00 48 c7 c0 00 00 00 80 48 2b 05 bb 48 ad 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 99 48 ad 03 48 8b 48 08 <48> 89 c2 f6 c1 01 0f 85 ba 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 RSP: 0018:ffff888037a06e58 EFLAGS: 00000286 RAX: ffffea000031a0c0 RBX: ffff88800c6830b8 RCX: ffff88800877d3c0 RDX: ffff88808c6830b8 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff88800c6830b8 R09: ffffffff8765295f R10: fffffbfff0eca52b R11: 0000000000000001 R12: dffffc0000000000 R13: ffff888037a06e98 R14: 0000000000000000 R15: ffff8880141f2be0 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x172/0x300 alloc_buffer_head+0x24/0x150 alloc_page_buffers+0x2a2/0x690 __getblk_slow+0x3f0/0xbf0 __getblk_gfp+0x76/0x80 ext4_ind_map_blocks+0xc5e/0x2320 ext4_map_blocks+0xc80/0x19e0 ext4_do_writepages+0x190c/0x33f0 ext4_writepages+0x27c/0x5f0 do_writepages+0x1ad/0x650 filemap_fdatawrite_wbc+0x14b/0x1b0 __filemap_fdatawrite_range+0xba/0x100 file_write_and_wait_range+0xd2/0x140 ext4_sync_file+0x221/0xfe0 vfs_fsync_range+0x141/0x230 ext4_buffered_write_iter+0x37d/0x460 ext4_file_write_iter+0x3ff/0x1930 do_iter_readv_writev+0x211/0x3c0 do_iter_write+0x18b/0x700 vfs_writev+0x1ae/0x670 __x64_sys_pwritev+0x233/0x310 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f82c339ab19 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:00007f82c0910188 EFLAGS: 00000246 ORIG_RAX: 0000000000000128 RAX: ffffffffffffffda RBX: 00007f82c34adf60 RCX: 00007f82c339ab19 RDX: 0000000000000001 RSI: 0000000020000380 RDI: 0000000000000006 RBP: 00007f82c33f4f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000007fffff8 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffca85925bf R14: 00007f82c0910300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 loop1: detected capacity change from 0 to 5 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 48 83 c4 20 add $0x20,%rsp 4: e8 62 3d 16 03 callq 0x3163d6b 9: b8 ff ff ff ff mov $0xffffffff,%eax e: 65 0f c1 05 b5 67 d6 xadd %eax,%gs:0x7ed667b5(%rip) # 0x7ed667cb 15: 7e 16: 83 f8 01 cmp $0x1,%eax 19: 0f 85 9f 01 00 00 jne 0x1be 1f: 48 85 ed test %rbp,%rbp 22: 0f 85 90 01 00 00 jne 0x1b8 * 28: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction 2f: fc ff df 32: 48 01 c3 add %rax,%rbx 35: 48 c7 03 00 00 00 00 movq $0x0,(%rbx) 3c: 48 rex.W 3d: c7 .byte 0xc7