INFO: task hung in perf_event_free_task (3)
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syzbot
Dec 8, 2021, 6:06:19 AM12/8/21
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14900ae5b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=347f9f98572e20abc94b
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+347f9f...@syzkaller.appspotmail.com
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
Bluetooth: hci4: command 0x0406 tx timeout
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
INFO: task syz-executor.4:23254 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D25072 23254 8128 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
perf_event_free_task+0x4cf/0x660 kernel/events/core.c:11372
copy_process.part.0+0x3710/0x8260 kernel/fork.c:2137
copy_process kernel/fork.c:1710 [inline]
_do_fork+0x22f/0xf30 kernel/fork.c:2219
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ff2cc42baf9
Code: Bad RIP value.
RSP: 002b:00007ff2cb3a1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ff2cc53ef60 RCX: 00007ff2cc42baf9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ff2cc485ff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb1f2987f R14: 00007ff2cb3a1300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/1571:
#0: 00000000beb4c0be (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
2 locks held by in:imklog/7813:
#0: 000000002ccd3ed1 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
#1: 00000000e341513e (logbuf_lock){-.-.}, at: __debug_check_no_obj_freed lib/debugobjects.c:776 [inline]
#1: 00000000e341513e (logbuf_lock){-.-.}, at: debug_check_no_obj_freed+0xb5/0x490 lib/debugobjects.c:817
2 locks held by agetty/7818:
#0: 000000006553c027 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000000a2acda (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
2 locks held by agetty/7821:
#0: 00000000ec46cbcd (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000b14d5b3a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7815 Comm: rs:main Q:Reg Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:149 [inline]
RIP: 0010:unwind_next_frame+0x24a/0x1400 arch/x86/kernel/unwind_orc.c:422
Code: 8d 43 ff 39 c6 0f 83 06 0e 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 bc 91 17 8c 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 30
RSP: 0018:ffff8880a179f120 EFLAGS: 00000a03
RAX: dffffc0000000000 RBX: 1ffff110142f3e2d RCX: 0000000000000000
RDX: 000000000000dbf0 RSI: 000000000000dbf0 RDI: ffffffff8c1b017c
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: ffff8880a179f2af R11: 0000000000074071 R12: ffff8880a179f298
R13: ffff8880a179f285 R14: ffff8880a179f250 R15: ffffffff81dbf045
FS: 00007fa407a09700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f27ccb6e018 CR3: 000000009296a000 CR4: 00000000003426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:448 [inline]
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553
slab_post_alloc_hook mm/slab.h:445 [inline]
slab_alloc mm/slab.c:3397 [inline]
kmem_cache_alloc+0x110/0x370 mm/slab.c:3557
kmem_cache_zalloc include/linux/slab.h:699 [inline]
ext4_init_io_end+0x23/0x110 fs/ext4/page-io.c:253
ext4_writepages+0x10f2/0x37f0 fs/ext4/inode.c:2830
do_writepages+0xe5/0x290 mm/page-writeback.c:2344
__filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446
file_write_and_wait_range+0x93/0x100 mm/filemap.c:776
__generic_file_fsync+0x74/0x1f0 fs/libfs.c:985
ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118
vfs_fsync_range+0x13a/0x220 fs/sync.c:197
generic_write_sync include/linux/fs.h:2750 [inline]
ext4_file_write_iter+0x726/0xf20 fs/ext4/file.c:283
call_write_iter include/linux/fs.h:1821 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x51b/0x770 fs/read_write.c:487
vfs_write+0x1f3/0x540 fs/read_write.c:549
ksys_write+0x12b/0x2a0 fs/read_write.c:599
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa40a44d1cd
Code: c2 20 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ae fc ff ff 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 f7 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fa407a08590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa3fc023600 RCX: 00007fa40a44d1cd
RDX: 00000000000003e1 RSI: 00007fa3fc023600 RDI: 0000000000000006
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fa3fc023380
R13: 00007fa407a085b0 R14: 0000565471f76360 R15: 00000000000003e1
----------------
Code disassembly (best guess):
0: 8d 43 ff lea -0x1(%rbx),%eax
3: 39 c6 cmp %eax,%esi
5: 0f 83 06 0e 00 00 jae 0xe11
b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
12: fc ff df
15: 89 f2 mov %esi,%edx
17: 48 8d 3c 95 bc 91 17 lea -0x73e86e44(,%rdx,4),%rdi
1e: 8c
1f: 48 89 f9 mov %rdi,%rcx
22: 48 c1 e9 03 shr $0x3,%rcx
26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx
* 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction
2d: 83 e0 07 and $0x7,%eax
30: 83 c0 03 add $0x3,%eax
33: 38 c8 cmp %cl,%al
35: 7c 27 jl 0x5e
37: 84 c9 test %cl,%cl
39: 74 23 je 0x5e
3b: 48 89 54 24 30 mov %rdx,0x30(%rsp)
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 3f8a27f9e27b Linux 4.19.211
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14900ae5b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=9b9277b418617afe
dashboard link: https://syzkaller.appspot.com/bug?extid=347f9f98572e20abc94b
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+347f9f...@syzkaller.appspotmail.com
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
Bluetooth: hci4: command 0x0406 tx timeout
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
INFO: task syz-executor.4:23254 blocked for more than 140 seconds.
Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4 D25072 23254 8128 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2828 [inline]
__schedule+0x887/0x2040 kernel/sched/core.c:3517
schedule+0x8d/0x1b0 kernel/sched/core.c:3561
perf_event_free_task+0x4cf/0x660 kernel/events/core.c:11372
copy_process.part.0+0x3710/0x8260 kernel/fork.c:2137
copy_process kernel/fork.c:1710 [inline]
_do_fork+0x22f/0xf30 kernel/fork.c:2219
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7ff2cc42baf9
Code: Bad RIP value.
RSP: 002b:00007ff2cb3a1188 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ff2cc53ef60 RCX: 00007ff2cc42baf9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ff2cc485ff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb1f2987f R14: 00007ff2cb3a1300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/1571:
#0: 00000000beb4c0be (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441
2 locks held by in:imklog/7813:
#0: 000000002ccd3ed1 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767
#1: 00000000e341513e (logbuf_lock){-.-.}, at: __debug_check_no_obj_freed lib/debugobjects.c:776 [inline]
#1: 00000000e341513e (logbuf_lock){-.-.}, at: debug_check_no_obj_freed+0xb5/0x490 lib/debugobjects.c:817
2 locks held by agetty/7818:
#0: 000000006553c027 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 0000000000a2acda (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
2 locks held by agetty/7821:
#0: 00000000ec46cbcd (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272
#1: 00000000b14d5b3a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x991/0xe60 kernel/hung_task.c:287
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7815 Comm: rs:main Q:Reg Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:149 [inline]
RIP: 0010:unwind_next_frame+0x24a/0x1400 arch/x86/kernel/unwind_orc.c:422
Code: 8d 43 ff 39 c6 0f 83 06 0e 00 00 48 b8 00 00 00 00 00 fc ff df 89 f2 48 8d 3c 95 bc 91 17 8c 48 89 f9 48 c1 e9 03 0f b6 0c 01 <48> 89 f8 83 e0 07 83 c0 03 38 c8 7c 27 84 c9 74 23 48 89 54 24 30
RSP: 0018:ffff8880a179f120 EFLAGS: 00000a03
RAX: dffffc0000000000 RBX: 1ffff110142f3e2d RCX: 0000000000000000
RDX: 000000000000dbf0 RSI: 000000000000dbf0 RDI: ffffffff8c1b017c
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001
R10: ffff8880a179f2af R11: 0000000000074071 R12: ffff8880a179f298
R13: ffff8880a179f285 R14: ffff8880a179f250 R15: ffffffff81dbf045
FS: 00007fa407a09700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f27ccb6e018 CR3: 000000009296a000 CR4: 00000000003426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:448 [inline]
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553
slab_post_alloc_hook mm/slab.h:445 [inline]
slab_alloc mm/slab.c:3397 [inline]
kmem_cache_alloc+0x110/0x370 mm/slab.c:3557
kmem_cache_zalloc include/linux/slab.h:699 [inline]
ext4_init_io_end+0x23/0x110 fs/ext4/page-io.c:253
ext4_writepages+0x10f2/0x37f0 fs/ext4/inode.c:2830
do_writepages+0xe5/0x290 mm/page-writeback.c:2344
__filemap_fdatawrite_range+0x27d/0x350 mm/filemap.c:446
file_write_and_wait_range+0x93/0x100 mm/filemap.c:776
__generic_file_fsync+0x74/0x1f0 fs/libfs.c:985
ext4_sync_file+0xa35/0x1420 fs/ext4/fsync.c:118
vfs_fsync_range+0x13a/0x220 fs/sync.c:197
generic_write_sync include/linux/fs.h:2750 [inline]
ext4_file_write_iter+0x726/0xf20 fs/ext4/file.c:283
call_write_iter include/linux/fs.h:1821 [inline]
new_sync_write fs/read_write.c:474 [inline]
__vfs_write+0x51b/0x770 fs/read_write.c:487
vfs_write+0x1f3/0x540 fs/read_write.c:549
ksys_write+0x12b/0x2a0 fs/read_write.c:599
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa40a44d1cd
Code: c2 20 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ae fc ff ff 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 f7 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fa407a08590 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa3fc023600 RCX: 00007fa40a44d1cd
RDX: 00000000000003e1 RSI: 00007fa3fc023600 RDI: 0000000000000006
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007fa3fc023380
R13: 00007fa407a085b0 R14: 0000565471f76360 R15: 00000000000003e1
----------------
Code disassembly (best guess):
0: 8d 43 ff lea -0x1(%rbx),%eax
3: 39 c6 cmp %eax,%esi
5: 0f 83 06 0e 00 00 jae 0xe11
b: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
12: fc ff df
15: 89 f2 mov %esi,%edx
17: 48 8d 3c 95 bc 91 17 lea -0x73e86e44(,%rdx,4),%rdi
1e: 8c
1f: 48 89 f9 mov %rdi,%rcx
22: 48 c1 e9 03 shr $0x3,%rcx
26: 0f b6 0c 01 movzbl (%rcx,%rax,1),%ecx
* 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction
2d: 83 e0 07 and $0x7,%eax
30: 83 c0 03 add $0x3,%eax
33: 38 c8 cmp %cl,%al
35: 7c 27 jl 0x5e
37: 84 c9 test %cl,%cl
39: 74 23 je 0x5e
3b: 48 89 54 24 30 mov %rdx,0x30(%rsp)
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Aug 31, 2022, 10:29:21 AM8/31/22
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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