ci starts bisection 2023-04-04 21:40:11.919580694 +0000 UTC m=+2588.523642000
bisecting fixing commit since f339c2597ebb00e738f2b6328c14804ed19f5d57
building syzkaller on 93e26d605eebce2ad19e6f37d9e96a872ca55cce
ensuring issue is reproducible on original commit f339c2597ebb00e738f2b6328c14804ed19f5d57

testing commit f339c2597ebb00e738f2b6328c14804ed19f5d57 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: ef6edb30c3500d3784a4e26cca0acb34aac61b42b7795608243234b7eb542510
all runs: crashed: INFO: trying to register non-static key in net_free
testing current HEAD 76f598ba7d8e2bfb4855b5298caedd5af0c374a8
testing commit 76f598ba7d8e2bfb4855b5298caedd5af0c374a8 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 27fe5e20fb5a8383966909470faeb8ee69838918bd9d0d5f1d544d00b85a9a9a
all runs: crashed: INFO: task hung in lock_metapage
revisions tested: 2, total time: 30m34.048096068s (build: 18m29.799548409s, test: 11m7.141337709s)
the crash still happens on HEAD
commit msg: Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
crash: INFO: task hung in lock_metapage
INFO: task jfsCommit:104 blocked for more than 143 seconds.
      Not tainted 6.3.0-rc5-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit       state:D stack:27768 pid:104   ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5307 [inline]
 __schedule+0xc01/0x56c0 kernel/sched/core.c:6625
 schedule+0xde/0x1a0 kernel/sched/core.c:6701
 io_schedule+0xbe/0x130 kernel/sched/core.c:8887
 __lock_metapage fs/jfs/jfs_metapage.c:50 [inline]
 lock_metapage+0x1d7/0x3c0 fs/jfs/jfs_metapage.c:64
 __get_metapage+0x2d4/0xed0 fs/jfs/jfs_metapage.c:639
 diIAGRead.isra.0+0xab/0x120 fs/jfs/jfs_imap.c:2662
 diFree+0x8c9/0x3380 fs/jfs/jfs_imap.c:955
 jfs_evict_inode+0x349/0x440 fs/jfs/inode.c:156
 evict+0x296/0x5d0 fs/inode.c:665
 txUpdateMap+0x847/0xa50 fs/jfs/jfs_txnmgr.c:2362
 txLazyCommit fs/jfs/jfs_txnmgr.c:2659 [inline]
 jfs_lazycommit+0x4db/0x950 fs/jfs/jfs_txnmgr.c:2727
 kthread+0x298/0x340 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8b78a130 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8b789e30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/27:
 #0: ffffffff8b78ac80 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by jfsCommit/103:
 #0: ffff888025e90920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x265/0x3380 fs/jfs/jfs_imap.c:885
 #1: ffff888074e19cf8 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x27e/0x3380 fs/jfs/jfs_imap.c:890
2 locks held by jfsCommit/104:
 #0: ffff888025600920 (&(imap->im_aglock[index])){+.+.}-{3:3}, at: diFree+0x265/0x3380 fs/jfs/jfs_imap.c:885
 #1: ffff888074e52638 (&jfs_ip->rdwrlock/1){.+.+}-{3:3}, at: diFree+0x27e/0x3380 fs/jfs/jfs_imap.c:890
2 locks held by getty/4761:
 #0: ffff888026ca7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x23/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb73/0x1040 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.0/6193:
 #0: ffff88807b5640e0 (&type->s_umount_key#50){+.+.}-{3:3}, at: deactivate_super+0x63/0x80 fs/super.c:361

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

NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.3.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x64/0xb0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x175/0x200 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x1bc/0x200 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0x9f9/0xcf0 kernel/hung_task.c:379
 kthread+0x298/0x340 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:86 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x1b/0x20 drivers/acpi/processor_idle.c:112