REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block INFO: task kworker/0:3:1558 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. REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block kworker/0:3 D25736 1558 2 0x80000000 REISERFS (device loop2): using ordered data mode Workqueue: events_long flush_old_commits reiserfs: using flush barriers REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop4): using ordered data mode Call Trace: REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 reiserfs: using flush barriers context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 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 warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop1): Using r5 hash to sort names REISERFS (device loop2): checking transaction log (loop2) REISERFS (device loop4): checking transaction log (loop4) REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): Using r5 hash to sort names REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 reiserfs_sync_fs+0x7d/0x120 fs/reiserfs/super.c:76 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block flush_old_commits+0xf7/0x200 fs/reiserfs/super.c:111 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block process_one_work+0x864/0x1570 kernel/workqueue.c:2153 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 REISERFS (device loop4): Using r5 hash to sort names REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block kthread+0x33f/0x460 kernel/kthread.c:259 REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block INFO: task syz-executor.5:9183 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D30576 9183 8162 0x00000004 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal schedule+0x8d/0x1b0 kernel/sched/core.c:3561 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 REISERFS (device loop2): using ordered data mode reiserfs: using flush barriers REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): checking transaction log (loop2) call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] vfs_rmdir.part.0+0x5c/0x3d0 fs/namei.c:3872 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block vfs_rmdir fs/namei.c:3868 [inline] do_rmdir+0x3fd/0x490 fs/namei.c:3943 REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal REISERFS (device loop1): using ordered data mode REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block 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 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): Using r5 hash to sort names entry_SYSCALL_64_after_hwframe+0x49/0xbe REISERFS (device loop1): checking transaction log (loop1) REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. RIP: 0033:0x7f37fbe5c0f9 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block Code: Bad RIP value. RSP: 002b:00007f37f23ad168 EFLAGS: 00000246 ORIG_RAX: 0000000000000054 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block RAX: ffffffffffffffda RBX: 00007f37fbf7c050 RCX: 00007f37fbe5c0f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block RBP: 00007f37fbeb7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block R13: 00007ffd4e34f6ef R14: 00007f37f23ad300 R15: 0000000000022000 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block INFO: task syz-executor.5:9185 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. REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop1): Using r5 hash to sort names syz-executor.5 D30192 9185 8162 0x00000004 REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. Call Trace: REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block audit: type=1804 audit(1676045125.452:255): pid=12855 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir93370262/syzkaller.jdXZjE/337/bus" dev="sda1" ino=14894 res=1 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 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): found reiserfs format "3.6" with non-standard journal REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): using ordered data mode call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 reiserfs: using flush barriers __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write_nested+0x51/0x90 kernel/locking/rwsem.c:194 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): journal params: device loop2, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 inode_lock_nested include/linux/fs.h:783 [inline] filename_create+0x15a/0x490 fs/namei.c:3638 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop2): checking transaction log (loop2) user_path_create fs/namei.c:3696 [inline] do_mkdirat+0xa0/0x2d0 fs/namei.c:3834 audit: type=1804 audit(1676045126.062:256): pid=12869 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir93370262/syzkaller.jdXZjE/338/bus" dev="sda1" ino=13951 res=1 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop4): found reiserfs format "3.6" with non-standard journal REISERFS (device loop4): using ordered data mode REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block reiserfs: using flush barriers do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe 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 warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block RIP: 0033:0x7f37fbe5c0f9 Code: Bad RIP value. RSP: 002b:00007f37f238c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f37fbf7c120 RCX: 00007f37fbe5c0f9 REISERFS (device loop4): checking transaction log (loop4) RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000020000300 REISERFS (device loop2): Using r5 hash to sort names REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block RBP: 00007f37fbeb7ae9 R08: 0000000000000000 R09: 0000000000000000 REISERFS (device loop2): Created .reiserfs_priv - reserved for xattr storage. R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block R13: 00007ffd4e34f6ef R14: 00007f37f238c300 R15: 0000000000022000 Showing all locks held in the system: REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block 1 lock held by khungtaskd/1569: #0: 00000000a5e6fefb (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block netlink: 24 bytes leftover after parsing attributes in process `syz-executor.3'. REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block audit: type=1804 audit(1676045127.022:257): pid=12899 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir93370262/syzkaller.jdXZjE/339/bus" dev="sda1" ino=14901 res=1 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block 1 lock held by in:imklog/7812: #0: 000000007c8970ff (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop1): found reiserfs format "3.6" with non-standard journal 2 locks held by kworker/u4:7/9497: REISERFS (device loop1): using ordered data mode 5 locks held by syz-executor.3/1183: reiserfs: using flush barriers REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block 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 1 lock held by syz-executor.3/1356: #0: 000000009924d591 (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 000000009924d591 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block 4 locks held by kworker/0:3/1558: REISERFS (device loop1): checking transaction log (loop1) #0: 0000000079c22ba9 ((wq_completion)"events_long"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block #1: 000000002aebac22 ((work_completion)(&(&sbi->old_work)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block #2: 000000000613580f (&type->s_umount_key#77){++++}, at: flush_old_commits+0x78/0x200 fs/reiserfs/super.c:97 REISERFS (device loop4): Using r5 hash to sort names REISERFS (device loop4): Created .reiserfs_priv - reserved for xattr storage. #3: 00000000b994363c (&sbi->lock){+.+.}, at: reiserfs_write_lock+0x75/0xf0 fs/reiserfs/lock.c:27 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block 4 locks held by syz-executor.5/9072: 3 locks held by syz-executor.5/9183: #0: 00000000fc72268a (sb_writers#21){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000fc72268a (sb_writers#21){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block #1: 0000000060574869 (&type->i_mutex_dir_key#14/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 0000000060574869 (&type->i_mutex_dir_key#14/1){+.+.}, at: do_rmdir+0x255/0x490 fs/namei.c:3931 REISERFS (device loop1): Using r5 hash to sort names #2: 00000000133d2886 (&type->i_mutex_dir_key#14){++++}, at: inode_lock include/linux/fs.h:748 [inline] #2: 00000000133d2886 (&type->i_mutex_dir_key#14){++++}, at: vfs_rmdir.part.0+0x5c/0x3d0 fs/namei.c:3872 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block REISERFS (device loop1): Created .reiserfs_priv - reserved for xattr storage. 2 locks held by syz-executor.5/9185: #0: 00000000fc72268a (sb_writers#21){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000fc72268a (sb_writers#21){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block #1: 0000000060574869 (&type->i_mutex_dir_key#14/1){+.+.}, at: inode_lock_nested include/linux/fs.h:783 [inline] #1: 0000000060574869 (&type->i_mutex_dir_key#14/1){+.+.}, at: filename_create+0x15a/0x490 fs/namei.c:3638 2 locks held by syz-executor.2/12920: 3 locks held by syz-executor.5/12921: REISERFS warning (device loop5): sh-2029: %s: bitmap block (#%u) reading failed reiserfs_read_bitmap_block: reiserfs_read_bitmap_block 2 locks held by syz-executor.0/12918: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1569 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 12921 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1080 [inline] RIP: 0010:rcu_lockdep_current_cpu_online+0xfd/0x1b0 kernel/rcu/tree.c:1068 Code: cf 89 48 8d 7b 20 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 a8 00 00 00 48 8d 7b 28 4c 8b 6b 20 48 89 f8 48 c1 e8 03 80 3c 28 00 <0f> 85 99 00 00 00 49 8d 7d 68 48 8b 5b 28 48 89 f8 48 c1 e8 03 80 RSP: 0018:ffff8880ba107f80 EFLAGS: 00000046 RAX: 1ffff110174257d5 RBX: ffff8880ba12be80 RCX: ffffffff83771e23 RDX: 1ffffffff139f5e1 RSI: ffffffff83771e31 RDI: ffff8880ba12bea8 RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66505b R12: ffffffff89f88280 R13: ffffffff89f88280 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f9691f18700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7fe42ba000 CR3: 00000000af603000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock_sched_held+0xd3/0x1d0 kernel/rcu/update.c:115 trace_local_timer_exit arch/x86/include/asm/trace/irq_vectors.h:56 [inline] smp_apic_timer_interrupt+0x3ca/0x550 arch/x86/kernel/apic/apic.c:1097 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x14/0x50 kernel/kcov.c:101 Code: 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 65 48 8b 04 25 c0 df 01 00 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 RSP: 0018:ffff8880570ffa50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff88808f952540 RBX: ffff88809f0e8308 RCX: ffffc9000b7ab000 RDX: 0000000080000000 RSI: ffffffff81805f6c RDI: ffff88809f0e8308 RBP: 1ffff1100ae1ff53 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000001000 R14: 0000000000211000 R15: ffff8880570ffd90 balance_dirty_pages_ratelimited+0x6c/0x1df0 mm/page-writeback.c:1863 generic_perform_write+0x313/0x4d0 mm/filemap.c:3206 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f9693957e7f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 RSP: 002b:00007f9691f17f10 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f9693957e7f RDX: 0000000000400000 RSI: 00007f9689af8000 RDI: 0000000000000006 RBP: 00007f9689af8000 R08: 0000000000000000 R09: 00000000000010ee R10: 0000000000400000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f9691f17fdc R14: 00007f9691f17fe0 R15: 00000000200033c2