INFO: task jfsCommit:106 blocked for more than 143 seconds. Not tainted 6.5.0-rc3-syzkaller-00123-g57012c57536f #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:jfsCommit state:D stack:27616 pid:106 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5381 [inline] __schedule+0xee1/0x59f0 kernel/sched/core.c:6710 schedule+0xe7/0x1b0 kernel/sched/core.c:6786 io_schedule+0xbe/0x130 kernel/sched/core.c:9028 __lock_metapage fs/jfs/jfs_metapage.c:50 [inline] lock_metapage+0x239/0x4d0 fs/jfs/jfs_metapage.c:64 __get_metapage+0x3ce/0x1170 fs/jfs/jfs_metapage.c:639 diIAGRead.isra.0+0xcd/0x140 fs/jfs/jfs_imap.c:2662 diFree+0xa94/0x2760 fs/jfs/jfs_imap.c:955 jfs_evict_inode+0x3d4/0x4b0 fs/jfs/inode.c:156 evict+0x2ed/0x6b0 fs/inode.c:665 iput_final fs/inode.c:1791 [inline] iput.part.0+0x55e/0x7a0 fs/inode.c:1817 iput+0x5c/0x80 fs/inode.c:1807 txUpdateMap+0xaef/0xd10 fs/jfs/jfs_txnmgr.c:2367 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x5dc/0xb20 fs/jfs/jfs_txnmgr.c:2732 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 RIP: 0000:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c9a2730 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c9a2430 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522 1 lock held by khungtaskd/27: #0: ffffffff8c9a3340 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615 2 locks held by jfsCommit/106: #0: ffff888070618920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x2ff/0x2760 fs/jfs/jfs_imap.c:885 #1: ffff888071bb3278 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x31c/0x2760 fs/jfs/jfs_imap.c:890 2 locks held by getty/4775: #0: ffff88814ad15098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900020482f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187 2 locks held by strace-static-x/5022: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.5.0-rc3-syzkaller-00123-g57012c57536f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x2ac/0x310 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xf29/0x11b0 kernel/hung_task.c:379 kthread+0x33a/0x430 kernel/kthread.c:389 ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296 RIP: 0000:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5022 Comm: strace-static-x Not tainted 6.5.0-rc3-syzkaller-00123-g57012c57536f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:check_region_inline mm/kasan/generic.c:172 [inline] RIP: 0010:kasan_check_range+0x1b/0x190 mm/kasan/generic.c:187 Code: 43 0c e8 88 df ff ff 89 43 08 5b 5d c3 66 90 66 0f 1f 00 48 85 f6 0f 84 48 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <0f> 82 c6 00 00 00 48 b8 ff ff ff ff ff 7f ff ff 48 39 f8 0f 83 b3 RSP: 0018:ffffc900034cfab8 EFLAGS: 00000082 RAX: ffffffff91840e98 RBX: 00000000000000af RCX: ffffffff81663297 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff91840e90 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000080000 R10: ffff88802aca4998 R11: 0000000000000000 R12: 00000000000000af R13: ffff88807db5ecc8 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000001c263c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4a0935b000 CR3: 000000002aa68000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] hlock_class kernel/locking/lockdep.c:228 [inline] check_wait_context kernel/locking/lockdep.c:4780 [inline] __lock_acquire+0x437/0x5de0 kernel/locking/lockdep.c:5094 lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0x36/0x50 kernel/locking/spinlock.c:170 spin_lock_irq include/linux/spinlock.h:376 [inline] ptrace_resume kernel/ptrace.c:882 [inline] ptrace_request+0x628/0x11f0 kernel/ptrace.c:1219 arch_ptrace+0x151/0x3b0 arch/x86/kernel/ptrace.c:847 __do_sys_ptrace kernel/ptrace.c:1305 [inline] __se_sys_ptrace kernel/ptrace.c:1278 [inline] __x64_sys_ptrace+0x17c/0x2a0 kernel/ptrace.c:1278 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4e987a Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 54 RSP: 002b:00007ffcf99254c0 EFLAGS: 00000206 ORIG_RAX: 0000000000000065 RAX: ffffffffffffffda RBX: 0000000001c26368 RCX: 00000000004e987a RDX: 0000000000000000 RSI: 00000000000013a1 RDI: 0000000000000018 RBP: 0000000000000018 R08: 0000000000000017 R09: 00000000000003a1 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000001c27b90 R13: 0000000000000000 R14: 0000000001c27b90 R15: 000000000063f160 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.658 msecs