ieee802154 phy1 wpan1: encryption failed: -22 wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) wlan1: No active IBSS STAs - trying to scan for other IBSS networks with same SSID (merge) INFO: task syz-executor.5:26989 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28816 26989 24400 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 grab_super+0xa2/0x350 fs/super.c:383 sget_userns+0x352/0xcd0 fs/super.c:511 sget+0x102/0x140 fs/super.c:570 mount_bdev+0xf8/0x3b0 fs/super.c:1131 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fedc482a01a Code: Bad RIP value. RSP: 002b:00007fedc1d5bfa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fedc482a01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fedc1d5c000 RBP: 00007fedc1d5c040 R08: 00007fedc1d5c040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fedc1d5c000 R15: 0000000020013500 Showing all locks held in the system: 3 locks held by kworker/u4:1/23: #0: 000000007f72efe1 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9702 [inline] #0: 000000007f72efe1 (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6841 #1: 000000007f72efe1 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #1: 000000007f72efe1 (&rq->lock){-.-.}, at: attach_tasks kernel/sched/fair.c:7432 [inline] #1: 000000007f72efe1 (&rq->lock){-.-.}, at: load_balance+0xa88/0x2080 kernel/sched/fair.c:8749 #2: 00000000abb0d2e8 (&base->lock){-.-.}, at: lock_timer_base+0x55/0x1b0 kernel/time/timer.c:950 1 lock held by khungtaskd/1567: #0: 000000000f4c00ef (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7801: #0: 000000003eee9bcb (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/7798: #0: 00000000ddc8b0c7 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000176e65c7 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 2 locks held by syz-executor.5/26947: 2 locks held by syz-executor.5/26989: #0: 000000009ae98d16 (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 #1: 000000009ca80838 (&type->s_umount_key#72){+.+.}, at: grab_super+0xa2/0x350 fs/super.c:383 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1567 Comm: khungtaskd 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 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 26947 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lookup_bh_lru fs/buffer.c:1261 [inline] RIP: 0010:__find_get_block+0xbe/0xde0 fs/buffer.c:1291 Code: 00 00 48 83 3d 62 0d 41 08 00 0f 84 8c 06 00 00 e8 37 10 b2 ff fa 66 0f 1f 44 00 00 e8 1b 38 b7 ff 31 db eb 1d e8 22 10 b2 ff <83> c3 01 bf 10 00 00 00 89 de e8 83 11 b2 ff 83 fb 10 0f 84 68 01 RSP: 0018:ffff88823a8c76b0 EFLAGS: 00000046 RAX: 0000000000040000 RBX: 0000000000000008 RCX: ffffc90006455000 RDX: 0000000000040000 RSI: ffffffff81b0754e RDI: 0000000000000006 RBP: 0000000000000008 R08: 0000000000000001 R09: 0000000000000100 R10: 0000000000000006 R11: 0000000000000000 R12: ffff88808db8f3f0 R13: 0000000000000100 R14: 00000000000026eb R15: ffff88808db8f3f0 FS: 00007fedc1d9e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3c0acbd000 CR3: 0000000045390000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __getblk_slow+0x14a/0x9e0 fs/buffer.c:1040 __getblk_gfp fs/buffer.c:1321 [inline] __bread_gfp+0x218/0x300 fs/buffer.c:1366 sb_bread include/linux/buffer_head.h:309 [inline] udf_tread+0xe8/0x130 fs/udf/misc.c:44 udf_read_tagged+0x4e/0x530 fs/udf/misc.c:219 udf_check_anchor_block+0x1b4/0x610 fs/udf/super.c:1827 udf_scan_anchors+0x1b3/0x5f0 fs/udf/super.c:1867 udf_find_anchor fs/udf/super.c:1924 [inline] udf_load_vrs+0x633/0xbf0 fs/udf/super.c:1989 udf_fill_super+0x7d1/0x17a0 fs/udf/super.c:2184 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x310 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2492 [inline] do_mount+0x115c/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fedc482a01a Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 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:00007fedc1d9dfa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fedc482a01a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fedc1d9e000 RBP: 00007fedc1d9e040 R08: 00007fedc1d9e040 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007fedc1d9e000 R15: 0000000020013500 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 48 83 3d 62 0d 41 08 cmpq $0x0,0x8410d62(%rip) # 0x8410d6c 9: 00 a: 0f 84 8c 06 00 00 je 0x69c 10: e8 37 10 b2 ff callq 0xffb2104c 15: fa cli 16: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 1c: e8 1b 38 b7 ff callq 0xffb7383c 21: 31 db xor %ebx,%ebx 23: eb 1d jmp 0x42 25: e8 22 10 b2 ff callq 0xffb2104c * 2a: 83 c3 01 add $0x1,%ebx <-- trapping instruction 2d: bf 10 00 00 00 mov $0x10,%edi 32: 89 de mov %ebx,%esi 34: e8 83 11 b2 ff callq 0xffb211bc 39: 83 fb 10 cmp $0x10,%ebx 3c: 0f .byte 0xf 3d: 84 68 01 test %ch,0x1(%rax)