INFO: task jbd2/sda1-8:5115 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:25736 pid:5115 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5393 [inline]
__schedule+0x156f/0x4720 kernel/sched/core.c:6722
schedule+0xbd/0x170 kernel/sched/core.c:6796
io_schedule+0x80/0xd0 kernel/sched/core.c:9075
bit_wait_io+0x13/0x100 kernel/sched/wait_bit.c:209
__wait_on_bit+0x9f/0x2c0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x13c/0x190 kernel/sched/wait_bit.c:64
wait_on_buffer include/linux/buffer_head.h:373 [inline]
jbd2_journal_commit_transaction+0x2e90/0x5ad0 fs/jbd2/commit.c:815
kjournald2+0x40f/0x810 fs/jbd2/journal.c:201
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
INFO: task syz-executor:5773 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:22888 pid:5773 ppid:5772 flags:0x00004002
Call Trace:
context_switch kernel/sched/core.c:5393 [inline]
__schedule+0x156f/0x4720 kernel/sched/core.c:6722
schedule+0xbd/0x170 kernel/sched/core.c:6796
io_schedule+0x80/0xd0 kernel/sched/core.c:9075
bit_wait_io+0x13/0x100 kernel/sched/wait_bit.c:209
__wait_on_bit+0x9f/0x2c0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x13c/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x5c9/0xe00 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x10c/0x140 fs/jbd2/transaction.c:1231
__ext4_journal_get_write_access+0x208/0x6d0 fs/ext4/ext4_jbd2.c:241
ext4_reserve_inode_write+0x205/0x2a0 fs/ext4/inode.c:5967
__ext4_mark_inode_dirty+0x13f/0x720 fs/ext4/inode.c:6151
ext4_dirty_inode+0xcb/0x110 fs/ext4/inode.c:6188
__mark_inode_dirty+0x2cc/0xc90 fs/fs-writeback.c:2537
generic_update_time fs/inode.c:1978 [inline]
inode_update_time fs/inode.c:1991 [inline]
__file_update_time fs/inode.c:2177 [inline]
file_update_time+0x187/0x1a0 fs/inode.c:2207
ext4_page_mkwrite+0x1f9/0x11a0 fs/ext4/inode.c:6306
do_page_mkwrite+0x153/0x3f0 mm/memory.c:2951
wp_page_shared mm/memory.c:3311 [inline]
do_wp_page+0xd4d/0x34d0 mm/memory.c:3396
handle_pte_fault mm/memory.c:5063 [inline]
__handle_mm_fault mm/memory.c:5190 [inline]
handle_mm_fault+0x1300/0x4a40 mm/memory.c:5355
do_user_addr_fault+0xeb7/0x13e0 arch/x86/mm/fault.c:1371
handle_page_fault arch/x86/mm/fault.c:1463 [inline]
exc_page_fault+0x64/0x100 arch/x86/mm/fault.c:1516
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f503f871a63
RSP: 002b:00007ffc7a084bf0 EFLAGS: 00010206
RAX: 00007f503affb720 RBX: 00007ffc7a084d20 RCX: 0000000000000000
RDX: 00007f503affb71c RSI: 0000000000000008 RDI: 00007ffc7a084d20
RBP: 00000000000003e6 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffc7a084d00 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000048e0 R14: ffffffffffffb720 R15: 0000000000000000
INFO: task syz.0.194:6530 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.194 state:D stack:27048 pid:6530 ppid:5787 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5393 [inline]
__schedule+0x156f/0x4720 kernel/sched/core.c:6722
schedule+0xbd/0x170 kernel/sched/core.c:6796
io_schedule+0x80/0xd0 kernel/sched/core.c:9075
bit_wait_io+0x13/0x100 kernel/sched/wait_bit.c:209
__wait_on_bit+0x9f/0x2c0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x13c/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x5c9/0xe00 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x10c/0x140 fs/jbd2/transaction.c:1231
__ext4_journal_get_write_access+0x208/0x6d0 fs/ext4/ext4_jbd2.c:241
ext4_reserve_inode_write+0x205/0x2a0 fs/ext4/inode.c:5967
__ext4_mark_inode_dirty+0x13f/0x720 fs/ext4/inode.c:6151
ext4_dirty_inode+0xcb/0x110 fs/ext4/inode.c:6188
__mark_inode_dirty+0x2cc/0xc90 fs/fs-writeback.c:2537
generic_update_time fs/inode.c:1978 [inline]
inode_update_time fs/inode.c:1991 [inline]
__file_update_time fs/inode.c:2177 [inline]
file_update_time+0x187/0x1a0 fs/inode.c:2207
ext4_page_mkwrite+0x1f9/0x11a0 fs/ext4/inode.c:6306
do_page_mkwrite+0x153/0x3f0 mm/memory.c:2951
do_shared_fault mm/memory.c:4717 [inline]
do_fault mm/memory.c:4779 [inline]
do_pte_missing mm/memory.c:3689 [inline]
handle_pte_fault mm/memory.c:5047 [inline]
__handle_mm_fault mm/memory.c:5190 [inline]
handle_mm_fault+0x1a26/0x4a40 mm/memory.c:5355
do_user_addr_fault+0xeb7/0x13e0 arch/x86/mm/fault.c:1371
handle_page_fault arch/x86/mm/fault.c:1463 [inline]
exc_page_fault+0x64/0x100 arch/x86/mm/fault.c:1516
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7faa7aa740b1
RSP: 002b:00007ffc96d7d460 EFLAGS: 00010202
RAX: 0000001b2e622000 RBX: ffffffff895486ea RCX: 0000001b2e621ff8
RDX: 0000001b2e02421c RSI: 0000000000000008 RDI: 00007faa7b955720
RBP: 00000000000000b2 R08: 00007faa7ae10000 R09: 00007faa7ae12000
R10: 00000000895486ee R11: 0000000000000002 R12: 00007faa7ae26038
R13: 00000000000000ba R14: ffffffff89548be9 R15: 00007faa7b955720
INFO: task syz.2.197:6542 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.197 state:D stack:27560 pid:6542 ppid:5793 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5393 [inline]
__schedule+0x156f/0x4720 kernel/sched/core.c:6722
schedule+0xbd/0x170 kernel/sched/core.c:6796
io_schedule+0x80/0xd0 kernel/sched/core.c:9075
bit_wait_io+0x13/0x100 kernel/sched/wait_bit.c:209
__wait_on_bit+0x9f/0x2c0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x13c/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x5c9/0xe00 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x10c/0x140 fs/jbd2/transaction.c:1231
__ext4_journal_get_write_access+0x208/0x6d0 fs/ext4/ext4_jbd2.c:241
ext4_reserve_inode_write+0x205/0x2a0 fs/ext4/inode.c:5967
__ext4_mark_inode_dirty+0x13f/0x720 fs/ext4/inode.c:6151
ext4_dirty_inode+0xcb/0x110 fs/ext4/inode.c:6188
__mark_inode_dirty+0x2cc/0xc90 fs/fs-writeback.c:2537
generic_update_time fs/inode.c:1978 [inline]
inode_update_time fs/inode.c:1991 [inline]
__file_update_time fs/inode.c:2177 [inline]
file_update_time+0x187/0x1a0 fs/inode.c:2207
ext4_page_mkwrite+0x1f9/0x11a0 fs/ext4/inode.c:6306
do_page_mkwrite+0x153/0x3f0 mm/memory.c:2951
do_shared_fault mm/memory.c:4717 [inline]
do_fault mm/memory.c:4779 [inline]
do_pte_missing mm/memory.c:3689 [inline]
handle_pte_fault mm/memory.c:5047 [inline]
__handle_mm_fault mm/memory.c:5190 [inline]
handle_mm_fault+0x1a26/0x4a40 mm/memory.c:5355
do_user_addr_fault+0xeb7/0x13e0 arch/x86/mm/fault.c:1371
handle_page_fault arch/x86/mm/fault.c:1463 [inline]
exc_page_fault+0x64/0x100 arch/x86/mm/fault.c:1516
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f7d1c46c7c3
RSP: 002b:00007fffb690f730 EFLAGS: 00010246
RAX: 00000000003ffde8 RBX: 0000000000000000 RCX: 0000001b2e264000
RDX: 0000001b2e224000 RSI: 0000000000400000 RDI: 00007f7d1c7e8708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007fffb690f9c0
INFO: task syz.4.198:6543 blocked for more than 144 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.198 state:D stack:27560 pid:6543 ppid:6022 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5393 [inline]
__schedule+0x156f/0x4720 kernel/sched/core.c:6722
schedule+0xbd/0x170 kernel/sched/core.c:6796
io_schedule+0x80/0xd0 kernel/sched/core.c:9075
bit_wait_io+0x13/0x100 kernel/sched/wait_bit.c:209
__wait_on_bit+0x9f/0x2c0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x13c/0x190 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:101 [inline]
do_get_write_access+0x5c9/0xe00 fs/jbd2/transaction.c:1096
jbd2_journal_get_write_access+0x10c/0x140 fs/jbd2/transaction.c:1231
__ext4_journal_get_write_access+0x208/0x6d0 fs/ext4/ext4_jbd2.c:241
ext4_reserve_inode_write+0x205/0x2a0 fs/ext4/inode.c:5967
__ext4_mark_inode_dirty+0x13f/0x720 fs/ext4/inode.c:6151
ext4_dirty_inode+0xcb/0x110 fs/ext4/inode.c:6188
__mark_inode_dirty+0x2cc/0xc90 fs/fs-writeback.c:2537
generic_update_time fs/inode.c:1978 [inline]
inode_update_time fs/inode.c:1991 [inline]
__file_update_time fs/inode.c:2177 [inline]
file_update_time+0x187/0x1a0 fs/inode.c:2207
ext4_page_mkwrite+0x1f9/0x11a0 fs/ext4/inode.c:6306
do_page_mkwrite+0x153/0x3f0 mm/memory.c:2951
do_shared_fault mm/memory.c:4717 [inline]
do_fault mm/memory.c:4779 [inline]
do_pte_missing mm/memory.c:3689 [inline]
handle_pte_fault mm/memory.c:5047 [inline]
__handle_mm_fault mm/memory.c:5190 [inline]
handle_mm_fault+0x1a26/0x4a40 mm/memory.c:5355
do_user_addr_fault+0xeb7/0x13e0 arch/x86/mm/fault.c:1371
handle_page_fault arch/x86/mm/fault.c:1463 [inline]
exc_page_fault+0x64/0x100 arch/x86/mm/fault.c:1516
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f840a86c7c3
RSP: 002b:00007ffceba9d370 EFLAGS: 00010246
RAX: 00000000003ffde8 RBX: 0000000000000000 RCX: 0000001b2d164000
RDX: 0000001b2d124000 RSI: 0000000000400000 RDI: 00007f840abe8708
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffceba9d600
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e1322e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8e1322e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8e1322e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6669
2 locks held by getty/5543:
#0: ffff88802f4b90a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000327e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x43a/0x1400 drivers/tty/n_tty.c:2217
3 locks held by syz-executor/5773:
#0: ffff88801e7e9e20 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#0: ffff88801e7e9e20 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5382 [inline]
#0: ffff88801e7e9e20 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5442
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1634 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1738 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1e2/0x11a0 fs/ext4/inode.c:6305
#2: ffff88814d776990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f3f/0x2170 fs/jbd2/transaction.c:448
2 locks held by kworker/u4:17/5939:
#0: ffff8880b8c3c258 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:570
#1: ffff8880b8c28a00 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
#1: ffff8880b8c28a00 (psi_seq){-.-.}-{0:0}, at: __schedule+0x21fc/0x4720 kernel/sched/core.c:6717
3 locks held by syz.0.194/6530:
#0: ffff88803379c420 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#0: ffff88803379c420 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5382 [inline]
#0: ffff88803379c420 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5442
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1634 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1738 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1e2/0x11a0 fs/ext4/inode.c:6305
#2: ffff88814d776990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f3f/0x2170 fs/jbd2/transaction.c:448
3 locks held by syz.2.197/6542:
#0: ffff8880337994a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#0: ffff8880337994a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5382 [inline]
#0: ffff8880337994a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5442
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1634 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1738 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1e2/0x11a0 fs/ext4/inode.c:6305
#2: ffff88814d776990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f3f/0x2170 fs/jbd2/transaction.c:448
3 locks held by syz.4.198/6543:
#0: ffff88801e7e81a0 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:165 [inline]
#0: ffff88801e7e81a0 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5382 [inline]
#0: ffff88801e7e81a0 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5442
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1634 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: sb_start_pagefault include/linux/fs.h:1738 [inline]
#1: ffff88814d772510 (sb_pagefaults){.+.+}-{0:0}, at: ext4_page_mkwrite+0x1e2/0x11a0 fs/ext4/inode.c:6305
#2: ffff88814d776990 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x1f3f/0x2170 fs/jbd2/transaction.c:448
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Call Trace:
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf59/0xfa0 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4463 Comm: kworker/u4:10 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:178 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:241 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x10/0x90 kernel/kcov.c:309
Code: 11 10 48 89 74 11 18 48 89 44 11 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 65 48 8b 15 a0 d5 7b 7e <65> 8b 0d a1 d5 7b 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75
RSP: 0018:ffffc9000f247770 EFLAGS: 00000246
RAX: ffffffff8a17cbff RBX: 0000000000000005 RCX: 0000000000000000
RDX: ffff888032025a00 RSI: 0000000000000005 RDI: 0000000000000040
RBP: 000000000000005a R08: ffffffff8f8dda6f R09: 1ffffffff1f1bb4d
R10: dffffc0000000000 R11: fffffbfff1f1bb4e R12: 000000000000000b
R13: 000000000000005a R14: dffffc0000000000 R15: ffff8880542bb3b0
FS: 0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556fea277660 CR3: 000000000df32000 CR4: 00000000003506f0
Call Trace:
ieee80211_sta_get_rates+0x3ef/0x6c0 net/mac80211/util.c:2319
ieee80211_update_sta_info net/mac80211/ibss.c:1006 [inline]
ieee80211_rx_bss_info net/mac80211/ibss.c:1121 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1612 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1117/0x2dc0 net/mac80211/ibss.c:1641
ieee80211_iface_process_skb net/mac80211/iface.c:1690 [inline]
ieee80211_iface_work+0x730/0xc90 net/mac80211/iface.c:1744
cfg80211_wiphy_work+0x228/0x260 net/wireless/core.c:444
process_one_work kernel/workqueue.c:2657 [inline]
process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293