ext4_bread+0x7c/0x210 fs/ext4/inode.c:1043 WARNING: CPU: 0 PID: 668 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline] WARNING: CPU: 0 PID: 668 at net/mac80211/tx.c:4154 __ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline] WARNING: CPU: 0 PID: 668 at net/mac80211/tx.c:4154 __ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347 Kernel panic - not syncing: panic_on_warn set ... ext4_append+0x155/0x370 fs/ext4/namei.c:66 ext4_init_new_dir fs/ext4/namei.c:2659 [inline] ext4_mkdir+0x5bd/0xe10 fs/ext4/namei.c:2706 vfs_mkdir+0x508/0x7a0 fs/namei.c:3819 do_mkdirat+0x262/0x2d0 fs/namei.c:3842 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb02c8d8c07 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 53 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:00007fb02b84efa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fb02c8d8c07 RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000100 RBP: 00007fb02b84f040 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fb02b84f000 R15: 0000000020000140 CPU: 0 PID: 668 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4154 [inline] RIP: 0010:__ieee80211_csa_update_counter net/mac80211/tx.c:4149 [inline] RIP: 0010:__ieee80211_beacon_get+0x1678/0x1a30 net/mac80211/tx.c:4347 Code: 85 70 03 00 00 41 0f b6 45 24 31 ff 44 8d 60 ff 45 88 65 24 44 89 e6 e8 e6 9f bf f9 45 84 e4 0f 85 4f f5 ff ff e8 a8 9e bf f9 <0f> 0b e9 43 f5 ff ff e8 9c 9e bf f9 e8 c7 c6 ad f9 31 ff 41 89 c4 RSP: 0018:ffff8880ba007c18 EFLAGS: 00010206 RAX: ffff88808c6523c0 RBX: ffff8880974972f8 RCX: ffffffff87a2e6ba RDX: 0000000000000100 RSI: ffffffff87a2e6c8 RDI: 0000000000000001 RBP: ffff88808c759940 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88809cf75780 R14: 0000000000000000 R15: ffff8880ba007d60 ieee80211_beacon_get_tim+0x88/0x890 net/mac80211/tx.c:4463 ieee80211_beacon_get include/net/mac80211.h:4484 [inline] mac80211_hwsim_beacon_tx+0xff/0x680 drivers/net/wireless/mac80211_hwsim.c:1577 __iterate_interfaces+0x2e1/0x4a0 net/mac80211/util.c:614 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:650 mac80211_hwsim_beacon+0xc9/0x190 drivers/net/wireless/mac80211_hwsim.c:1615 __tasklet_hrtimer_trampoline+0x29/0xa0 kernel/softirq.c:601 tasklet_action_common.constprop.0+0x265/0x360 kernel/softirq.c:522 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:__read_once_size include/linux/compiler.h:263 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x1db/0x420 kernel/smp.c:302 Code: 00 e8 09 04 0a 00 48 8b 4c 24 08 48 8b 54 24 10 48 8d 74 24 40 8b 7c 24 1c e8 a1 f9 ff ff 41 89 c5 eb 07 e8 e7 03 0a 00 f3 90 <44> 8b 64 24 58 31 ff 41 83 e4 01 44 89 e6 e8 42 05 0a 00 45 85 e4 RSP: 0018:ffff88809f33fae0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff88808c6523c0 RBX: 1ffff11013e67f60 RCX: ffffffff8158819e RDX: 0000000000000000 RSI: ffffffff81588189 RDI: 0000000000000005 RBP: ffff88809f33fbb0 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000002 smp_call_function_many+0x743/0x8d0 kernel/smp.c:434 on_each_cpu_mask+0x3c/0x240 kernel/smp.c:632 on_each_cpu_cond+0x12d/0x1c0 kernel/smp.c:684 kill_bdev fs/block_dev.c:85 [inline] __blkdev_put+0x29e/0x870 fs/block_dev.c:1813 blkdev_close+0x86/0xb0 fs/block_dev.c:1888 __fput+0x2ce/0x890 fs/file_table.c:278 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f800a011270 Code: 73 01 c3 48 8b 0d 38 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 59 c1 20 00 00 75 10 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ee fb ff ff 48 89 04 24 RSP: 002b:00007ffc36ead338 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007f800a011270 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00007f800aecb710 R08: 000056291e499ee0 R09: 000056291e499c00 R10: 00007f800aecb8c0 R11: 0000000000000246 R12: 0000000000000000 R13: 000056291e49aab0 R14: 0000000000000003 R15: 000000000000000e Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: 00 e8 add %ch,%al 2: 09 04 0a or %eax,(%rdx,%rcx,1) 5: 00 48 8b add %cl,-0x75(%rax) 8: 4c 24 08 rex.WR and $0x8,%al b: 48 8b 54 24 10 mov 0x10(%rsp),%rdx 10: 48 8d 74 24 40 lea 0x40(%rsp),%rsi 15: 8b 7c 24 1c mov 0x1c(%rsp),%edi 19: e8 a1 f9 ff ff callq 0xfffff9bf 1e: 41 89 c5 mov %eax,%r13d 21: eb 07 jmp 0x2a 23: e8 e7 03 0a 00 callq 0xa040f 28: f3 90 pause * 2a: 44 8b 64 24 58 mov 0x58(%rsp),%r12d <-- trapping instruction 2f: 31 ff xor %edi,%edi 31: 41 83 e4 01 and $0x1,%r12d 35: 44 89 e6 mov %r12d,%esi 38: e8 42 05 0a 00 callq 0xa057f 3d: 45 85 e4 test %r12d,%r12d