Extracting prog: 11m56.744972591s Minimizing prog: 2h1m17.438882331s Simplifying prog options: 0s Extracting C: 3m16.044834086s Simplifying C: 23m50.287753363s 30 programs, timeouts [6m0s] extracting reproducer from 30 programs testing a last program of every proc single: executing 5 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat-getdents64 detailed listing: executing program 0: r0 = openat(0xffffffffffffff9c, &(0x7f0000000000)='.\x00', 0x0, 0x0) getdents64(r0, 0xfffffffffffffffe, 0x29) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): io_uring_setup-fsopen-fsconfig$FSCONFIG_SET_STRING-openat$autofs-openat$uhid-syz_mount_image$bcachefs-syz_mount_image$ext4-openat-openat-pwritev2-write$UHID_INPUT2-syz_mount_image$fuse-open$dir-renameat-mkdirat-mkdir-mount$overlay-open-mknodat$loop-chdir-linkat-openat$dir-open-rename-syz_mount_image$squashfs-poll-openat-mkdirat-openat$binder_debug detailed listing: executing program 0: io_uring_setup(0x307e, &(0x7f0000000000)) r0 = fsopen(&(0x7f0000000280)='cifs\x00', 0x0) fsconfig$FSCONFIG_SET_STRING(r0, 0x1, &(0x7f0000000040)='source', &(0x7f0000000f80)='//\xf2b\x06\b\xba\xdf/o\xdc\xea\x95\x9a\x82\x10\x97W\x8f7\x98\x9b\\\\\\\xf9\rmD\x94)U\xdb\x15X.I\n}\xf3\x9d\xe4_\x05\x9cqf4I^#b?9\xde\xafu\'\x83L\xe0\x97\xe1n_\xa4%\xb1\x97\x93\xafv\xce/\\\xb4L\xf2_\xa7\xfb\xf4\x84\x1fA\xeas^\xef\xa2\x85\xa3!\xfb\x93\xd7R\xab2\x1eW\xe9h\x9b\xf7ul\xf9D\xd4\x82X5\x13\xaa\x87\xf9\xba\xa9m\x14\x14R_\x9a\\>4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b4\xce\x8e_#\xf8D\xb1\xdep\x01\xcc:\xa6\xc5n\xeb\xab\xf70\x99\xef\x8b /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:bch-copygc/loop state:D stack:20272 pid:5253 tgid:5253 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5264 [inline] __schedule+0x1843/0x4b00 kernel/sched/core.c:6607 __schedule_loop kernel/sched/core.c:6684 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6699 __closure_sync+0x259/0x2f0 lib/closure.c:146 bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:238 [inline] __bch2_write+0x55a7/0x5d20 fs/bcachefs/io_write.c:1506 bch2_write+0x947/0x1670 fs/bcachefs/io_write.c:1633 closure_queue include/linux/closure.h:270 [inline] closure_call include/linux/closure.h:432 [inline] bch2_data_update_read_done+0x22e/0x330 fs/bcachefs/data_update.c:423 move_write fs/bcachefs/move.c:133 [inline] bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 fs/bcachefs/move.c:164 move_buckets_wait+0x2ba/0x1290 fs/bcachefs/movinggc.c:114 bch2_copygc_thread+0x83f/0xc20 fs/bcachefs/movinggc.c:386 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701 2 locks held by kworker/0:2/1166: 2 locks held by getty/4973: #0: ffff88814c0bb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-08068-g1ec6d097897a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6086 Comm: syz-executor410 Not tainted 6.11.0-syzkaller-08068-g1ec6d097897a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0033:0x7f891138bcd0 Code: 49 8b 47 10 48 39 f0 72 6e 48 63 cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 <49> 89 c1 49 29 f1 47 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b RSP: 002b:00007ffc3e3d8930 EFLAGS: 00000212 RAX: 00000000008203f0 RBX: 00007ffc3e3d89d0 RCX: 0000000000000030 RDX: 0000000000000001 RSI: 0000000000000001 RDI: 00007ffc3e3d8a70 RBP: 0000000000000102 R08: 00007f8908e00000 R09: 0000000000000000 R10: 0000000000000000 R11: 00007ffc3e3d89e0 R12: 0000000000000001 R13: 00007f891140f0a0 R14: 0000000000000000 R15: 00007ffc3e3d8a70 FS: 0000555590d18380 GS: 0000000000000000 final repro crashed as (corrupted=false): INFO: task bch-copygc/loop:5253 blocked for more than 143 seconds. Not tainted 6.11.0-syzkaller-08068-g1ec6d097897a #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:bch-copygc/loop state:D stack:20272 pid:5253 tgid:5253 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5264 [inline] __schedule+0x1843/0x4b00 kernel/sched/core.c:6607 __schedule_loop kernel/sched/core.c:6684 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6699 __closure_sync+0x259/0x2f0 lib/closure.c:146 bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:238 [inline] __bch2_write+0x55a7/0x5d20 fs/bcachefs/io_write.c:1506 bch2_write+0x947/0x1670 fs/bcachefs/io_write.c:1633 closure_queue include/linux/closure.h:270 [inline] closure_call include/linux/closure.h:432 [inline] bch2_data_update_read_done+0x22e/0x330 fs/bcachefs/data_update.c:423 move_write fs/bcachefs/move.c:133 [inline] bch2_moving_ctxt_do_pending_writes+0x44c/0x8d0 fs/bcachefs/move.c:164 move_buckets_wait+0x2ba/0x1290 fs/bcachefs/movinggc.c:114 bch2_copygc_thread+0x83f/0xc20 fs/bcachefs/movinggc.c:386 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937ee0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701 2 locks held by kworker/0:2/1166: 2 locks held by getty/4973: #0: ffff88814c0bb0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211 ============================================= NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-08068-g1ec6d097897a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xff4/0x1040 kernel/hung_task.c:379 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6086 Comm: syz-executor410 Not tainted 6.11.0-syzkaller-08068-g1ec6d097897a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0033:0x7f891138bcd0 Code: 49 8b 47 10 48 39 f0 72 6e 48 63 cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 <49> 89 c1 49 29 f1 47 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b RSP: 002b:00007ffc3e3d8930 EFLAGS: 00000212 RAX: 00000000008203f0 RBX: 00007ffc3e3d89d0 RCX: 0000000000000030 RDX: 0000000000000001 RSI: 0000000000000001 RDI: 00007ffc3e3d8a70 RBP: 0000000000000102 R08: 00007f8908e00000 R09: 0000000000000000 R10: 0000000000000000 R11: 00007ffc3e3d89e0 R12: 0000000000000001 R13: 00007f891140f0a0 R14: 0000000000000000 R15: 00007ffc3e3d8a70 FS: 0000555590d18380 GS: 0000000000000000