syzbot


INFO: task hung in f2fs_init_xattr_caches

Status: auto-obsoleted due to no activity on 2024/07/11 23:40
Subsystems: f2fs
[Documentation on labels]
First crash: 284d, last: 282d

Sample crash report:
INFO: task syz-executor.2:19010 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc7-next-20240510-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:25144 pid:19010 tgid:19009 ppid:18030  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
 kmem_cache_create_usercopy+0x50/0x320 mm/slab_common.c:297
 kmem_cache_create+0x13/0x20 mm/slab_common.c:390
 f2fs_kmem_cache_create fs/f2fs/f2fs.h:2810 [inline]
 f2fs_init_xattr_caches+0x156/0x230 fs/f2fs/xattr.c:833
 f2fs_fill_super+0x48d3/0x7be0 fs/f2fs/super.c:4494
 mount_bdev+0x20a/0x2d0 fs/super.c:1659
 legacy_get_tree+0xee/0x190 fs/fs_context.c:662
 vfs_get_tree+0x90/0x2a0 fs/super.c:1780
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f75e827f46a
RSP: 002b:00007f75e8ff5ef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f75e8ff5f80 RCX: 00007f75e827f46a
RDX: 00000000200000c0 RSI: 0000000020000000 RDI: 00007f75e8ff5f40
RBP: 00000000200000c0 R08: 00007f75e8ff5f80 R09: 0000000002208412
R10: 0000000002208412 R11: 0000000000000202 R12: 0000000020000000
R13: 00007f75e8ff5f40 R14: 0000000000005557 R15: 0000000020000b40
 </TASK>

Showing all locks held in the system:
1 lock held by kworker/R-rcu_g/4:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
1 lock held by kworker/R-slub_/6:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
2 locks held by kworker/0:0/8:
3 locks held by kworker/u8:0/11:
 #0: ffff888015089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888015089148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90000107d00 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc90000107d00 ((work_completion)(&pool->idle_cull_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: idle_cull_fn+0xd5/0x540 kernel/workqueue.c:2955
1 lock held by khungtaskd/30:
 #0: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8e333e60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
5 locks held by kworker/0:2/334:
3 locks held by kworker/1:2/929:
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc900041efd00 (slab_caches_to_rcu_destroy_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc900041efd00 (slab_caches_to_rcu_destroy_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8e413648 (slab_mutex){+.+.}-{3:3}, at: slab_caches_to_rcu_destroy_workfn+0x37/0x120 mm/slab_common.c:435
3 locks held by kworker/u8:7/2817:
 #0: ffff888029d3d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888029d3d148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc9000a3d7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc9000a3d7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
2 locks held by kworker/u8:8/3881:
2 locks held by getty/4854:
 #0: ffff88802a53f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/1:4/5125:
 #0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888015081948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc900039cfd00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc900039cfd00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x91/0xea0 net/wireless/reg.c:2478
1 lock held by kworker/R-wg-cr/5155:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2689
1 lock held by kworker/R-wg-cr/5157:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2689
1 lock held by kworker/R-wg-cr/5166:
1 lock held by kworker/R-wg-cr/5167:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2689
2 locks held by kworker/0:6/5203:
2 locks held by kworker/0:7/5209:
2 locks held by kworker/0:5/8742:
2 locks held by kworker/R-wg-cr/9185:
1 lock held by kworker/R-wg-cr/12426:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
2 locks held by kworker/R-wg-cr/12453:
2 locks held by kworker/0:9/12598:
3 locks held by kworker/1:0/12599:
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc9000ce2fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc9000ce2fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
1 lock held by kworker/R-wg-cr/16901:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
1 lock held by kworker/R-wg-cr/16903:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
1 lock held by kworker/R-wg-cr/16906:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
1 lock held by kworker/R-wg-cr/17674:
2 locks held by kworker/R-wg-cr/17676:
1 lock held by kworker/R-wg-cr/18051:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
2 locks held by kworker/R-wg-cr/18052:
2 locks held by kworker/R-wg-cr/18053:
1 lock held by kworker/R-wg-cr/18156:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
1 lock held by kworker/R-wg-cr/18161:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_detach_from_pool+0x85/0x2f0 kernel/workqueue.c:2728
3 locks held by syz-executor.3/18935:
 #0: ffffffff8ea046e8 (bio_slab_lock){+.+.}-{3:3}, at: bio_put_slab block/bio.c:140 [inline]
 #0: ffffffff8ea046e8 (bio_slab_lock){+.+.}-{3:3}, at: bioset_exit+0x436/0x650 block/bio.c:1740
 #1: ffffffff8e1ce470 (cpu_hotplug_lock){++++}-{0:0}, at: kmem_cache_destroy+0x32/0x1b0 mm/slab_common.c:487
 #2: ffffffff8e413648 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_destroy+0x40/0x1b0 mm/slab_common.c:488
1 lock held by syz-executor.4/18987:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500
2 locks held by syz-executor.2/19010:
 #0: ffff88802a9220e0 (&type->s_umount_key#57/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344
 #1: ffffffff8e413648 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_create_usercopy+0x50/0x320 mm/slab_common.c:297
1 lock held by syz-executor.0/19016:
 #0: ffffffff8e413648 (slab_mutex){+.+.}-{3:3}, at: kmem_cache_create_usercopy+0x50/0x320 mm/slab_common.c:297
1 lock held by kworker/R-wg-cr/19024:
1 lock held by kworker/R-wg-cr/19025:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2689
1 lock held by kworker/R-wg-cr/19026:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2689
1 lock held by syz-executor.4/19028:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3500
1 lock held by kworker/R-wg-cr/19034:
 #0: ffffffff8e1de9e8 (wq_pool_attach_mutex){+.+.}-{3:3}, at: worker_attach_to_pool+0x31/0x390 kernel/workqueue.c:2689
2 locks held by kworker/R-wg-cr/19035:
1 lock held by kworker/R-wg-cr/19036:
1 lock held by syz-executor.2/19037:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
7 locks held by syz-executor.0/19040:
 #0: ffff88807e752420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
 #0: ffff88807e752420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x227/0xc90 fs/read_write.c:586
 #1: ffff888061932488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1eb/0x500 fs/kernfs/file.c:325
 #2: ffff888022f1d698 (kn->active#51){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20f/0x500 fs/kernfs/file.c:326
 #3: ffffffff8eef4de8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: new_device_store+0x1b4/0x890 drivers/net/netdevsim/bus.c:166
 #4: ffff88807e3470e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #4: ffff88807e3470e8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8e/0x520 drivers/base/dd.c:1003
 #5: ffff8880659a0250 (&devlink->lock_key#38){+.+.}-{3:3}, at: nsim_drv_probe+0xcb/0xb80 drivers/net/netdevsim/dev.c:1534
 #6: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: nsim_init_netdevsim drivers/net/netdevsim/netdev.c:677 [inline]
 #6: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: nsim_create+0x408/0x890 drivers/net/netdevsim/netdev.c:749
1 lock held by syz-executor.1/19043:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
6 locks held by syz-executor.3/19095:
2 locks held by syz-executor.4/19100:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
 #1: ffffffff8e1ce470 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:5984 [inline]
 #1: ffffffff8e1ce470 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x607/0x16e0 net/core/dev.c:11209
1 lock held by syz-executor.4/19101:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.2/19107:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.0/19110:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.1/19113:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.3/19116:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.4/19119:
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
 #0: ffffffff8f5e6b08 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc7-next-20240510-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+0x241/0x360 lib/dump_stack.c:114
 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+0xfde/0x1020 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
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19095 Comm: syz-executor.3 Not tainted 6.9.0-rc7-next-20240510-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:235 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp4+0x8/0x90 kernel/kcov.c:278
Code: 44 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 14 25 00 d5 03 00 65 8b 05 b0 b6 6d 7e a9 00 01 ff 00 74
RSP: 0018:ffffc90000007280 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffff888027118000
RDX: 0000000080010104 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffffc90000007360 R08: ffffffff8140fcdb R09: ffffffff8140f8cf
R10: 0000000000000003 R11: ffff888027118000 R12: ffffc90004ccf070
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffff92000000e6c
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557151a938 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 unwind_next_frame+0x1d7b/0x2a00 arch/x86/kernel/unwind_orc.c:664
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2195 [inline]
 slab_free mm/slub.c:4436 [inline]
 kfree+0x149/0x360 mm/slub.c:4557
 dummy_timer+0x7ce/0x45d0 drivers/usb/gadget/udc/dummy_hcd.c:1981
 __run_hrtimer kernel/time/hrtimer.c:1687 [inline]
 __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1751
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1813
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x3f0 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:handle_softirqs+0x2b8/0x990 kernel/softirq.c:554
Code: 22 00 84 c0 75 0d 80 3d 9a b8 3d 0e 00 0f 84 8f 01 00 00 4d 89 e5 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df 41 80 7c 05 00 00 <8b> 5c 24 2c 74 08 4c 89 e7 e8 7a e0 a1 00 81 e3 ff ff ff 7f 4d 8b
RSP: 0018:ffffc90000007e20 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff8159f461
RDX: 0000000000000000 RSI: ffffffff8c1fdca0 RDI: ffffffff8c1fdc60
RBP: ffffc90000007f50 R08: ffffffff8fad33ef R09: 1ffffffff1f5a67d
R10: dffffc0000000000 R11: fffffbfff1f5a67e R12: ffffffff8e00a0f8
R13: 1ffffffff1c0141f R14: 0000000000000007 R15: 0000000000000001
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 6a 68 89 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc90004ccf120 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000999e30 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcac680 RDI: ffffffff8c1fdcc0
RBP: ffffc90004ccf270 R08: ffffffff92fb2587 R09: 1ffffffff25f64b0
R10: dffffc0000000000 R11: fffffbfff25f64b1 R12: 1ffff92000999e2c
R13: dffffc0000000000 R14: ffffc90004ccf180 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 rcu_read_lock_sched include/linux/rcupdate.h:873 [inline]
 pfn_valid+0x113/0x440 include/linux/mmzone.h:2022
 page_table_check_clear+0x1e/0x570 mm/page_table_check.c:70
 get_and_clear_full_ptes include/linux/pgtable.h:678 [inline]
 zap_present_folio_ptes mm/memory.c:1481 [inline]
 zap_present_ptes mm/memory.c:1570 [inline]
 zap_pte_range mm/memory.c:1612 [inline]
 zap_pmd_range mm/memory.c:1730 [inline]
 zap_pud_range mm/memory.c:1759 [inline]
 zap_p4d_range mm/memory.c:1780 [inline]
 unmap_page_range+0x2e67/0x4d00 mm/memory.c:1801
 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1891
 exit_mmap+0x264/0xc80 mm/mmap.c:3341
 __mmput+0x115/0x3c0 kernel/fork.c:1346
 exit_mm+0x220/0x310 kernel/exit.c:565
 do_exit+0x9aa/0x27e0 kernel/exit.c:861
 do_group_exit+0x207/0x2c0 kernel/exit.c:1023
 get_signal+0x16a1/0x1740 kernel/signal.c:2909
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc51fe7dacb
Code: Unable to access opcode bytes at 0x7fc51fe7daa1.
RSP: 002b:00007fc520b910f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc51fe7dacb
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000d9
RBP: 00007fc51ffac050 R08: 0000000000000000 R09: 00007ffe9f2232d7
R10: 0000000000000008 R11: 0000000000000246 R12: ffffffffffffffb0
R13: 000000000000006e R14: 00007ffe9f2231f0 R15: 00007ffe9f2232d8
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/12 23:39 linux-next 75fa778d74b7 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in f2fs_init_xattr_caches
2024/05/11 06:41 linux-next 75fa778d74b7 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root INFO: task hung in f2fs_init_xattr_caches
* Struck through repros no longer work on HEAD.