Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/05/12 | upstream (ToT) | af300a395929 | C | [report] INFO: task hung in exfat_write_inode |
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Date | Name | Commit | Repro | Result |
---|---|---|---|---|
2024/05/12 | upstream (ToT) | af300a395929 | C | [report] INFO: task hung in exfat_write_inode |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | INFO: task hung in exfat_write_inode exfat | C | done | error | 3095 | 14m | 661d | 0/28 | upstream: reported C repro on 2022/12/22 18:53 |
linux-6.1 | INFO: task hung in exfat_write_inode | 3 | 364d | 429d | 0/3 | auto-obsoleted due to no activity on 2024/01/23 18:02 | |||
linux-6.1 | INFO: task hung in exfat_write_inode (2) origin:upstream | C | 164 | 17d | 182d | 0/3 | upstream: reported C repro on 2024/04/15 01:39 |
Created | Duration | User | Patch | Repo | Result |
---|---|---|---|---|---|
2024/08/09 12:43 | 1h20m | bisect fix | linux-5.15.y | OK (0) job log log |
INFO: task kworker/u4:0:9 blocked for more than 143 seconds. Not tainted 5.15.158-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:0 state:D stack:24000 pid: 9 ppid: 2 flags:0x00004000 Workqueue: writeback wb_workfn (flush-7:0) Call Trace: <TASK> context_switch kernel/sched/core.c:5030 [inline] __schedule+0x12c4/0x45b0 kernel/sched/core.c:6376 schedule+0x11b/0x1f0 kernel/sched/core.c:6459 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6518 __mutex_lock_common+0xe34/0x25a0 kernel/locking/mutex.c:669 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 exfat_write_inode+0x65/0x110 fs/exfat/inode.c:87 write_inode fs/fs-writeback.c:1495 [inline] __writeback_single_inode+0x644/0xe30 fs/fs-writeback.c:1705 writeback_sb_inodes+0xbce/0x1a40 fs/fs-writeback.c:1930 __writeback_inodes_wb+0x114/0x400 fs/fs-writeback.c:2001 wb_writeback+0x465/0xc50 fs/fs-writeback.c:2106 wb_check_background_flush fs/fs-writeback.c:2172 [inline] wb_do_writeback fs/fs-writeback.c:2260 [inline] wb_workfn+0xd07/0x1130 fs/fs-writeback.c:2288 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 </TASK> Showing all locks held in the system: 4 locks held by kworker/u4:0/9: #0: ffff8881425c6938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283 #1: ffffc90000ce7d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285 #2: ffff8880781100e0 (&type->s_umount_key#43){.+.+}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:418 #3: ffff8880151de0e0 (&sbi->s_lock){+.+.}-{3:3}, at: exfat_write_inode+0x65/0x110 fs/exfat/inode.c:87 1 lock held by khungtaskd/27: #0: ffffffff8c91fae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 2 locks held by getty/3258: #0: ffff88814adc9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252 #1: ffffc900024b32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158 3 locks held by syz-executor299/3540: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.15.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xe72/0xeb0 kernel/hung_task.c:295 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300 </TASK> Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3540 Comm: syz-executor299 Not tainted 5.15.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:188 Code: c7 e8 6f 3b 54 08 31 c0 c3 0f 0b b8 ea ff ff ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 41 57 41 56 <53> b0 01 48 85 f6 0f 84 9a 01 00 00 48 89 fd 48 01 f5 0f 82 59 02 RSP: 0018:ffffc90002db7408 EFLAGS: 00000246 RAX: ffffffff81ac52b2 RBX: 0000000000000000 RCX: ffffffff81ac52c2 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffea000158be40 RBP: ffffea000158be40 R08: ffffffff81ac529a R09: fffff940002b17c9 R10: 0000000000000000 R11: dffffc0000000001 R12: 00fff00000002032 R13: dffffc0000000000 R14: ffffea000158be48 R15: ffffea000158be40 FS: 0000555555a27380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000560ebb45d600 CR3: 00000000764af000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <TASK> instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] PageUnevictable include/linux/page-flags.h:424 [inline] mark_page_accessed+0x282/0x1330 mm/swap.c:408 __find_get_block+0x2d7/0x1350 fs/buffer.c:1314 __getblk_gfp+0x2d/0xaf0 fs/buffer.c:1332 __bread_gfp+0x2a/0x390 fs/buffer.c:1381 sb_bread include/linux/buffer_head.h:337 [inline] exfat_get_dentry+0x678/0x970 fs/exfat/dir.c:741 exfat_readdir fs/exfat/dir.c:122 [inline] exfat_iterate+0xc09/0x34a0 fs/exfat/dir.c:258 iterate_dir+0x224/0x570 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x209/0x4f0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f10a0d1b0a3 Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 82 48 fb ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 RSP: 002b:00007ffc22ca03a8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 0000555555a30730 RCX: 00007f10a0d1b0a3 RDX: 0000000000008000 RSI: 0000555555a30730 RDI: 0000000000000004 RBP: 0000555555a30704 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffb8 R13: 0000000000000010 R14: 0000555555a30700 R15: 00007ffc22ca2620 </TASK> INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.111 msecs
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/05/12 18:07 | linux-5.15.y | 284087d4f7d5 | 9026e142 | .config | console log | report | syz | C | [disk image] [vmlinux] [kernel image] [mounted in repro] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | |
2024/09/08 14:06 | linux-5.15.y | 14e468424d3e | 9750182a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/08/26 07:23 | linux-5.15.y | fa93fa65db6e | d7d32352 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/06/29 13:28 | linux-5.15.y | 4878aadf2d15 | 757f06b1 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/06/19 01:00 | linux-5.15.y | 4878aadf2d15 | 639d6cdf | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/05/20 16:15 | linux-5.15.y | 83655231580b | c0f1611a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/05/19 00:41 | linux-5.15.y | 83655231580b | c0f1611a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/05/18 06:24 | linux-5.15.y | 83655231580b | c0f1611a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/05/18 05:50 | linux-5.15.y | 83655231580b | c0f1611a | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/05/12 12:52 | linux-5.15.y | 284087d4f7d5 | 9026e142 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/04/28 06:00 | linux-5.15.y | b925f60c6ee7 | 07b455f9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/04/28 06:00 | linux-5.15.y | b925f60c6ee7 | 07b455f9 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/04/14 18:04 | linux-5.15.y | fa3df276cd36 | c8349e48 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode | ||
2024/04/13 19:02 | linux-5.15.y | fa3df276cd36 | c8349e48 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: task hung in exfat_write_inode |