UDF-fs: warning (device loop9): udf_fill_super: No partition found (1) ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.5:17561 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 D28592 17561 29411 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: 0033:0x7f7a205e558a Code: Bad RIP value. RSP: 002b:00007f7a1ef37f88 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f7a205e558a RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f7a1ef37fe0 RBP: 00007f7a1ef38020 R08: 00007f7a1ef38020 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000 R13: 0000000020000100 R14: 00007f7a1ef37fe0 R15: 0000000020000680 Showing all locks held in the system: 1 lock held by khungtaskd/1502: #0: 00000000e3a0270a (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7819: #0: 0000000083b4572b (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 1 lock held by syz-executor.2/17548: 2 locks held by syz-executor.5/17561: #0: 000000008c4868db (&bdev->bd_fsfreeze_mutex){+.+.}, at: mount_bdev+0x90/0x3b0 fs/super.c:1125 #1: 0000000073ddd91e (&type->s_umount_key#69){++++}, at: grab_super+0xa2/0x350 fs/super.c:383 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1502 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: 17548 Comm: syz-executor.2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x50 kernel/kcov.c:106 Code: 65 8b 15 cc 59 9f 7e 81 e2 00 01 1f 00 75 2b 8b 90 60 13 00 00 83 fa 02 75 20 48 8b 88 68 13 00 00 8b 80 64 13 00 00 48 8b 11 <48> 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 c3 0f 1f 84 00 00 RSP: 0018:ffff888048d57478 EFLAGS: 00000246 RAX: 0000000000040000 RBX: ffffea00026504c0 RCX: ffffc9000b578000 RDX: 000000000003ffff RSI: ffffffff87eef3d1 RDI: 0000000000000007 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000007 R11: 0000000000000000 R12: ffffea00026504c0 R13: ffff888027dd5600 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007fb0d64a3700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd5c58f2000 CR3: 00000000942b2000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __radix_tree_lookup+0x191/0x370 lib/radix-tree.c:1051 radix_tree_lookup_slot+0x70/0xc0 lib/radix-tree.c:1079 find_get_entry+0x109/0x8a0 mm/filemap.c:1454 pagecache_get_page+0x56/0xd50 mm/filemap.c:1564 find_get_page_flags include/linux/pagemap.h:278 [inline] __find_get_block_slow fs/buffer.c:206 [inline] __find_get_block+0x591/0xde0 fs/buffer.c:1295 __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+0x3ba/0x5f0 fs/udf/super.c:1889 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: 0033:0x7fb0d7b2e059 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb0d64a3168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fb0d7c40f60 RCX: 00007fb0d7b2e059 RDX: 0000000020000040 RSI: 0000000020000280 RDI: 00000000200004c0 RBP: 00007fb0d7b8808d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcfb2a5a5f R14: 00007fb0d64a3300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 65 8b 15 cc 59 9f 7e mov %gs:0x7e9f59cc(%rip),%edx # 0x7e9f59d3 7: 81 e2 00 01 1f 00 and $0x1f0100,%edx d: 75 2b jne 0x3a f: 8b 90 60 13 00 00 mov 0x1360(%rax),%edx 15: 83 fa 02 cmp $0x2,%edx 18: 75 20 jne 0x3a 1a: 48 8b 88 68 13 00 00 mov 0x1368(%rax),%rcx 21: 8b 80 64 13 00 00 mov 0x1364(%rax),%eax 27: 48 8b 11 mov (%rcx),%rdx * 2a: 48 83 c2 01 add $0x1,%rdx <-- trapping instruction 2e: 48 39 d0 cmp %rdx,%rax 31: 76 07 jbe 0x3a 33: 48 89 34 d1 mov %rsi,(%rcx,%rdx,8) 37: 48 89 11 mov %rdx,(%rcx) 3a: c3 retq 3b: 0f .byte 0xf 3c: 1f (bad) 3d: 84 00 test %al,(%rax)