REISERFS warning (device loop5): sh-2021 reiserfs_fill_super: can not find reiserfs on loop5 REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal REISERFS (device loop1): using ordered data mode reiserfs: using flush barriers REISERFS (device loop1): journal params: device loop1, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 INFO: task syz-executor.3:20559 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal REISERFS (device loop4): using ordered data mode reiserfs: using flush barriers "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. REISERFS (device loop4): journal params: device loop4, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop4): Using rupasov hash to sort names REISERFS (device loop1): checking transaction log (loop1) REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. syz-executor.3 D28416 20559 8134 0x00000004 Call Trace: netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 REISERFS error (device loop4): reiserfs-2025 reiserfs_cache_bitmap_metadata: bitmap block 17 is corrupted: first bit must be 1 REISERFS (device loop1): Using rupasov hash to sort names REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. gfs2: fsid=syz:syz: Trying to join cluster "lock_nolock", "syz:syz" REISERFS (device loop4): Remounting filesystem read-only schedule+0x8d/0x1b0 kernel/sched/core.c:3561 REISERFS warning (device loop4): clm-6006 reiserfs_dirty_inode: writing inode 1207963652 on readonly FS gfs2: fsid=syz:syz: Now mounting FS... schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. gfs2: fsid=syz:syz.s: first mount done, others may mount do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 netlink: 8 bytes leftover after parsing attributes in process `syz-executor.3'. __flush_work+0x4bb/0x8b0 kernel/workqueue.c:2926 REISERFS warning (device loop5): sh-2021 reiserfs_fill_super: can not find reiserfs on loop5 __cancel_work_timer+0x412/0x590 kernel/workqueue.c:3013 p9_conn_destroy net/9p/trans_fd.c:904 [inline] p9_fd_close+0x305/0x520 net/9p/trans_fd.c:934 p9_client_create+0x901/0x12e0 net/9p/client.c:1084 v9fs_session_init+0x1dd/0x1770 fs/9p/v9fs.c:421 v9fs_mount+0x73/0x910 fs/9p/vfs_super.c:135 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: 0033:0x7f239dd375a9 Code: Bad RIP value. RSP: 002b:00007f239c289168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f239de58050 RCX: 00007f239dd375a9 RDX: 0000000020000100 RSI: 0000000020000080 RDI: 0000000000000000 RBP: 00007f239dd927b0 R08: 0000000020000180 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff77dcd6ef R14: 00007f239c289300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 000000001a6c0ad2 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by systemd-udevd/4695: #0: 000000009344d125 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 fs/block_dev.c:1478 1 lock held by in:imklog/7780: #0: 000000009ac4e4bb (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/7766: #0: 0000000045c189bd (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 0000000080aa5bab (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 2 locks held by syz-executor.2/8131: #0: 000000002efb1d26 (&bdev->bd_mutex){+.+.}, at: __blkdev_put+0xfc/0x870 fs/block_dev.c:1806 #1: 000000002291e011 (loop_ctl_mutex){+.+.}, at: lo_release+0x1a/0x1f0 drivers/block/loop.c:1790 3 locks held by syz-executor.4/8132: #0: 000000009d3c4b77 (&type->s_umount_key#76){++++}, at: deactivate_super+0x16c/0x1a0 fs/super.c:359 #1: 0000000005c24043 (&bdev->bd_mutex){+.+.}, at: __blkdev_put+0xfc/0x870 fs/block_dev.c:1806 #2: 000000002291e011 (loop_ctl_mutex){+.+.}, at: lo_release+0x1a/0x1f0 drivers/block/loop.c:1790 2 locks held by kworker/1:2/8953: #0: 00000000a9d7e753 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000ab6f586d ((work_completion)(&m->wq)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 3 locks held by kworker/u4:7/9512: #0: 00000000f1237386 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000002e2cba35 (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000f62deeec (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 2 locks held by kworker/1:20/27115: #0: 00000000cb500753 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000074d31c1e ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 2 locks held by syz-executor.1/30403: #0: 000000009344d125 (&bdev->bd_mutex){+.+.}, at: __blkdev_put+0xfc/0x870 fs/block_dev.c:1806 #1: 000000002291e011 (loop_ctl_mutex){+.+.}, at: lo_release+0x1a/0x1f0 drivers/block/loop.c:1790 2 locks held by syz-executor.3/30507: #0: 000000002291e011 (loop_ctl_mutex){+.+.}, at: loop_control_ioctl+0x7b/0x480 drivers/block/loop.c:2137 #1: 00000000d4911b5f (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #1: 00000000d4911b5f (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 2 locks held by systemd-udevd/30515: #0: 00000000a77f1597 (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 fs/block_dev.c:1478 #1: 000000002291e011 (loop_ctl_mutex){+.+.}, at: lo_open+0x19/0xd0 drivers/block/loop.c:1771 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 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 kauditd_printk_skb: 18 callbacks suppressed audit: type=1800 audit(1667262407.738:1252): pid=30526 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="syz-executor.5" name="bus" dev="sda1" ino=14095 res=0 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 30520 Comm: systemd-udevd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:unwind_next_frame+0x524/0x1400 arch/x86/kernel/unwind_orc.c:435 Code: c6 49 8d 48 01 48 c1 ee 03 0f b6 34 16 48 89 cf 48 89 4c 24 20 48 c1 ef 03 0f b6 14 17 4c 89 c7 83 e7 07 40 38 fe 40 0f 9e c7 <40> 84 f6 40 0f 95 c6 40 84 f7 0f 85 a8 0b 00 00 48 89 ce 83 e6 07 RSP: 0018:ffff8880b3047748 EFLAGS: 00000297 RAX: 0000000000000015 RBX: 1ffff11016608ef2 RCX: ffffffff8b9c6e1f RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000001 R08: ffffffff8b9c6e1e R09: ffffffff8b9c6e1a R10: ffff8880b30478d7 R11: 0000000000074071 R12: ffff8880b30478c0 R13: ffff8880b30478ad R14: ffff8880b3047878 R15: ffffffff8b9c6e1a FS: 00007f7cc33f68c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7cc2275f60 CR3: 000000002abf0000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] kmem_cache_alloc_trace+0x11a/0x380 mm/slab.c:3623 kmalloc include/linux/slab.h:515 [inline] kzalloc include/linux/slab.h:709 [inline] aa_alloc_file_ctx security/apparmor/include/file.h:60 [inline] apparmor_file_alloc_security+0x394/0xad0 security/apparmor/lsm.c:438 security_file_alloc+0x40/0x90 security/security.c:880 __alloc_file+0xd8/0x340 fs/file_table.c:105 alloc_empty_file+0x6d/0x170 fs/file_table.c:150 alloc_file+0x5e/0x4d0 fs/file_table.c:192 alloc_file_pseudo+0x165/0x250 fs/file_table.c:231 anon_inode_getfile fs/anon_inodes.c:87 [inline] anon_inode_getfile+0xc8/0x1f0 fs/anon_inodes.c:70 anon_inode_getfd+0x4c/0xa0 fs/anon_inodes.c:132 do_signalfd4+0x2e1/0x3d0 fs/signalfd.c:287 __do_sys_signalfd4 fs/signalfd.c:320 [inline] __se_sys_signalfd4 fs/signalfd.c:311 [inline] __x64_sys_signalfd4+0x138/0x1c0 fs/signalfd.c:311 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7cc2275f72 Code: 41 5e 41 5f c3 48 8b 15 24 ff 2a 00 f7 d8 64 89 02 b8 ff ff ff ff eb cf 4c 63 d2 48 63 ff ba 08 00 00 00 b8 21 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 8b 15 f1 fe 2a 00 f7 RSP: 002b:00007ffeada65a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000121 RAX: ffffffffffffffda RBX: 00007ffeada65b00 RCX: 00007f7cc2275f72 RDX: 0000000000000008 RSI: 00007ffeada65b00 RDI: ffffffffffffffff RBP: 000055d0bbde7028 R08: 0000000000000020 R09: 0000000000000018 R10: 0000000000080800 R11: 0000000000000246 R12: 000055d0bbdfb504 R13: 000055d0bbdfae40 R14: 000055d0bbde7010 R15: 000055d0bbde7028