INFO: task kworker/u8:8:1156 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:8 state:D stack:22776 pid:1156 tgid:1156 ppid:2 task_flags:0x4248060 flags:0x00004000
Workqueue: writeback wb_workfn (flush-8:0)
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
io_schedule+0xbf/0x130 kernel/sched/core.c:7742
bit_wait_io+0x15/0xe0 kernel/sched/wait_bit.c:247
__wait_on_bit+0x62/0x180 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0xd9/0x110 kernel/sched/wait_bit.c:64
wait_on_bit_io include/linux/wait_bit.h:105 [inline]
__wait_on_buffer+0x64/0x70 fs/buffer.c:123
wait_on_buffer include/linux/buffer_head.h:413 [inline]
ext4_read_bh+0x2ad/0x310 fs/ext4/super.c:207
__read_extent_tree_block+0x370/0x640 fs/ext4/extents.c:571
ext4_find_extent+0x4a2/0xa70 fs/ext4/extents.c:938
ext4_ext_map_blocks+0x27d/0x5d60 fs/ext4/extents.c:4205
ext4_map_create_blocks fs/ext4/inode.c:519 [inline]
ext4_map_blocks+0x45b/0x1390 fs/ext4/inode.c:705
mpage_map_one_extent fs/ext4/inode.c:2223 [inline]
mpage_map_and_submit_extent fs/ext4/inode.c:2276 [inline]
ext4_do_writepages+0x1a2c/0x3490 fs/ext4/inode.c:2738
ext4_writepages+0x37a/0x7d0 fs/ext4/inode.c:2828
do_writepages+0x1b2/0x820 mm/page-writeback.c:2656
__writeback_single_inode+0x160/0xfb0 fs/fs-writeback.c:1680
writeback_sb_inodes+0x601/0xf90 fs/fs-writeback.c:1976
__writeback_inodes_wb+0xf8/0x2d0 fs/fs-writeback.c:2047
wb_writeback+0x7f3/0xb70 fs/fs-writeback.c:2158
wb_check_old_data_flush fs/fs-writeback.c:2262 [inline]
wb_do_writeback fs/fs-writeback.c:2315 [inline]
wb_workfn+0x8ca/0xbe0 fs/fs-writeback.c:2343
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task jbd2/sda1-8:5175 blocked for more than 143 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jbd2/sda1-8 state:D stack:26328 pid:5175 tgid:5175 ppid:2 task_flags:0x240040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
jbd2_journal_wait_updates+0x11e/0x240 fs/jbd2/transaction.c:843
jbd2_journal_commit_transaction+0x828/0x6830 fs/jbd2/commit.c:454
kjournald2+0x1f4/0x760 fs/jbd2/journal.c:201
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
INFO: task syz-executor:5829 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:22440 pid:5829 tgid:5829 ppid:5827 task_flags:0x400100 flags:0x00000002
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
wait_transaction_locked+0x1a1/0x230 fs/jbd2/transaction.c:152
add_transaction_credits+0x110/0xe60 fs/jbd2/transaction.c:222
start_this_handle+0x3e7/0x1410 fs/jbd2/transaction.c:403
jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501
__ext4_journal_start_sb+0x195/0x690 fs/ext4/ext4_jbd2.c:114
__ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline]
ext4_dirty_inode+0xa1/0x130 fs/ext4/inode.c:6071
__mark_inode_dirty+0x1eb/0xe50 fs/fs-writeback.c:2527
generic_update_time+0xcf/0xf0 fs/inode.c:2064
inode_update_time fs/inode.c:2077 [inline]
__file_update_time fs/inode.c:2305 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2335
ext4_page_mkwrite+0x35e/0x1750 fs/ext4/inode.c:6192
do_page_mkwrite+0x171/0x380 mm/memory.c:3287
do_shared_fault mm/memory.c:5594 [inline]
do_fault mm/memory.c:5656 [inline]
do_pte_missing+0x29c/0x3fb0 mm/memory.c:4160
handle_pte_fault mm/memory.c:5997 [inline]
__handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1337
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f772f0765ef
RSP: 002b:00007fffbb6a95b0 EFLAGS: 00010202
RAX: 00007f772d37c000 RBX: 00000000000000df RCX: 0000000000000004
RDX: 1ffffffff0331194 RSI: 0000555563dec578 RDI: 0000000000000010
RBP: 00007fffbb6a98a0 R08: 0000555563dec578 R09: 0000000000002232
R10: 00007f772f000000 R11: 00007fffbb6a9ab0 R12: 00007fffbb6a9900
R13: 0000000000000004 R14: 00007fffbb6a9620 R15: 00007fffbb6a96f0
INFO: task syz.2.252:6989 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.252 state:D stack:25672 pid:6989 tgid:6989 ppid:5839 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
wait_transaction_locked+0x1a1/0x230 fs/jbd2/transaction.c:152
add_transaction_credits+0x110/0xe60 fs/jbd2/transaction.c:222
start_this_handle+0x3e7/0x1410 fs/jbd2/transaction.c:403
jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501
__ext4_journal_start_sb+0x195/0x690 fs/ext4/ext4_jbd2.c:114
__ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline]
ext4_dirty_inode+0xa1/0x130 fs/ext4/inode.c:6071
__mark_inode_dirty+0x1eb/0xe50 fs/fs-writeback.c:2527
generic_update_time+0xcf/0xf0 fs/inode.c:2064
inode_update_time fs/inode.c:2077 [inline]
__file_update_time fs/inode.c:2305 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2335
ext4_page_mkwrite+0x35e/0x1750 fs/ext4/inode.c:6192
do_page_mkwrite+0x171/0x380 mm/memory.c:3287
do_shared_fault mm/memory.c:5594 [inline]
do_fault mm/memory.c:5656 [inline]
do_pte_missing+0x29c/0x3fb0 mm/memory.c:4160
handle_pte_fault mm/memory.c:5997 [inline]
__handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1337
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f3c9286d2fa
RSP: 002b:00007ffdabb9a050 EFLAGS: 00010202
RAX: 0000001b30d12000 RBX: 00007f3c936d5720 RCX: 0000001b30d11ff8
RDX: 0000001b30920220 RSI: 0000000000000008 RDI: 00007f3c936d5720
RBP: ffffffff8b69910d R08: 00007f3c92ba62d8 R09: 00007f3c92b92000
R10: 00007f3c903f6008 R11: 0000000000000009 R12: 0000000000000009
R13: 0000000000000773 R14: ffffffff8b6991ba R15: 000000000001c504
INFO: task syz.1.256:6999 blocked for more than 144 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.256 state:D stack:26488 pid:6999 tgid:6999 ppid:5841 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
wait_transaction_locked+0x1a1/0x230 fs/jbd2/transaction.c:152
add_transaction_credits+0x110/0xe60 fs/jbd2/transaction.c:222
start_this_handle+0x3e7/0x1410 fs/jbd2/transaction.c:403
jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501
__ext4_journal_start_sb+0x195/0x690 fs/ext4/ext4_jbd2.c:114
__ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline]
ext4_dirty_inode+0xa1/0x130 fs/ext4/inode.c:6071
__mark_inode_dirty+0x1eb/0xe50 fs/fs-writeback.c:2527
generic_update_time+0xcf/0xf0 fs/inode.c:2064
inode_update_time fs/inode.c:2077 [inline]
__file_update_time fs/inode.c:2305 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2335
ext4_page_mkwrite+0x35e/0x1750 fs/ext4/inode.c:6192
do_page_mkwrite+0x171/0x380 mm/memory.c:3287
do_shared_fault mm/memory.c:5594 [inline]
do_fault mm/memory.c:5656 [inline]
do_pte_missing+0x29c/0x3fb0 mm/memory.c:4160
handle_pte_fault mm/memory.c:5997 [inline]
__handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1337
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f6e30a6d2fa
RSP: 002b:00007ffd59230620 EFLAGS: 00010202
RAX: 0000001b30c08000 RBX: 00007f6e318d5720 RCX: 0000001b30c07ff8
RDX: 0000001b30820220 RSI: 0000000000000008 RDI: 00007f6e318d5720
RBP: ffffffff822b2861 R08: 00007f6e30da6038 R09: 00007f6e30d92000
R10: 00007f6e301ff008 R11: 0000000000000004 R12: 0000000000000004
R13: 000000000000012d R14: ffffffff822b283c R15: 0000000000000145
INFO: task syz.3.257:7000 blocked for more than 145 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.257 state:D stack:26488 pid:7000 tgid:7000 ppid:5842 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
wait_transaction_locked+0x1a1/0x230 fs/jbd2/transaction.c:152
add_transaction_credits+0x110/0xe60 fs/jbd2/transaction.c:222
start_this_handle+0x3e7/0x1410 fs/jbd2/transaction.c:403
jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501
__ext4_journal_start_sb+0x195/0x690 fs/ext4/ext4_jbd2.c:114
__ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline]
ext4_dirty_inode+0xa1/0x130 fs/ext4/inode.c:6071
__mark_inode_dirty+0x1eb/0xe50 fs/fs-writeback.c:2527
generic_update_time+0xcf/0xf0 fs/inode.c:2064
inode_update_time fs/inode.c:2077 [inline]
__file_update_time fs/inode.c:2305 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2335
ext4_page_mkwrite+0x35e/0x1750 fs/ext4/inode.c:6192
do_page_mkwrite+0x171/0x380 mm/memory.c:3287
do_shared_fault mm/memory.c:5594 [inline]
do_fault mm/memory.c:5656 [inline]
do_pte_missing+0x29c/0x3fb0 mm/memory.c:4160
handle_pte_fault mm/memory.c:5997 [inline]
__handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1337
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f773cc6d2fa
RSP: 002b:00007ffdc0186860 EFLAGS: 00010202
RAX: 0000001b30e08000 RBX: 00007f773dad5720 RCX: 0000001b30e07ff8
RDX: 0000001b30a20220 RSI: 0000000000000008 RDI: 00007f773dad5720
RBP: ffffffff816aea59 R08: 00007f773cfa6038 R09: 00007f773cf92000
R10: 00007f773c3ff008 R11: 0000000000000004 R12: 0000000000000004
R13: 00000000000000c6 R14: ffffffff816aeeb5 R15: 00000000000000d3
INFO: task syz.0.258:7011 blocked for more than 145 seconds.
Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.258 state:D stack:27896 pid:7011 tgid:7011 ppid:5840 task_flags:0x400040 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
wait_transaction_locked+0x1a1/0x230 fs/jbd2/transaction.c:152
add_transaction_credits+0x110/0xe60 fs/jbd2/transaction.c:222
start_this_handle+0x3e7/0x1410 fs/jbd2/transaction.c:403
jbd2__journal_start+0x394/0x6a0 fs/jbd2/transaction.c:501
__ext4_journal_start_sb+0x195/0x690 fs/ext4/ext4_jbd2.c:114
__ext4_journal_start fs/ext4/ext4_jbd2.h:242 [inline]
ext4_dirty_inode+0xa1/0x130 fs/ext4/inode.c:6071
__mark_inode_dirty+0x1eb/0xe50 fs/fs-writeback.c:2527
generic_update_time+0xcf/0xf0 fs/inode.c:2064
inode_update_time fs/inode.c:2077 [inline]
__file_update_time fs/inode.c:2305 [inline]
file_update_time+0x17d/0x1c0 fs/inode.c:2335
ext4_page_mkwrite+0x35e/0x1750 fs/ext4/inode.c:6192
do_page_mkwrite+0x171/0x380 mm/memory.c:3287
do_shared_fault mm/memory.c:5594 [inline]
do_fault mm/memory.c:5656 [inline]
do_pte_missing+0x29c/0x3fb0 mm/memory.c:4160
handle_pte_fault mm/memory.c:5997 [inline]
__handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309
do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1337
handle_page_fault arch/x86/mm/fault.c:1480 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1538
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f4c84e63c9b
RSP: 002b:00007ffc97081750 EFLAGS: 00010246
RAX: 00000000003ffde8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000001b30720000 RSI: 0000000000400000 RDI: 00007f4c850967b0
RBP: 0000000000000000 R08: 0000000000000004 R09: 0000000000040000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000002d190 R15: 00007ffc97081a00
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e3c1580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6764
3 locks held by kworker/u8:6/1103:
#0: ffff8880b8439f18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:605
#1: ffff8880b8423c48 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x201/0x8e0 kernel/sched/psi.c:975
#2: ffff88805fae0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: class_wiphy_constructor include/net/cfg80211.h:6092 [inline]
#2: ffff88805fae0768 (&rdev->wiphy.mtx){+.+.}-{4:4}, at: cfg80211_wiphy_work+0x99/0x550 net/wireless/core.c:421
6 locks held by kworker/u8:8/1156:
#0: ffff88801f6ed948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
#1: ffffc9000412fd18 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
#2: ffff8880340b20e0 (&type->s_umount_key#31){++++}-{4:4}, at: super_trylock_shared+0x1e/0xf0 fs/super.c:562
#3: ffff8880340b4b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: do_writepages+0x1b2/0x820 mm/page-writeback.c:2656
#4: ffff8880340b6950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0x5e4/0x1410 fs/jbd2/transaction.c:444
#5: ffff88807881aa68 (&ei->i_data_sem){++++}-{4:4}, at: ext4_map_blocks+0x355/0x1390 fs/ext4/inode.c:704
2 locks held by getty/5595:
#0: ffff88803183b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222
2 locks held by syz-executor/5829:
#0: ffff88802fed0308 (vm_lock){++++}-{0:0}, at: do_user_addr_fault+0x452/0x1370 arch/x86/mm/fault.c:1328
#1: ffff8880340b2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x171/0x380 mm/memory.c:3287
2 locks held by syz.2.252/6989:
#0: ffff888034493448 (vm_lock){++++}-{0:0}, at: do_user_addr_fault+0x452/0x1370 arch/x86/mm/fault.c:1328
#1: ffff8880340b2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x171/0x380 mm/memory.c:3287
2 locks held by syz.1.256/6999:
#0: ffff888035985d08 (vm_lock){++++}-{0:0}, at: do_user_addr_fault+0x452/0x1370 arch/x86/mm/fault.c:1328
#1: ffff8880340b2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x171/0x380 mm/memory.c:3287
2 locks held by syz.3.257/7000:
#0: ffff88802fc32808 (vm_lock){++++}-{0:0}, at: do_user_addr_fault+0x452/0x1370 arch/x86/mm/fault.c:1328
#1: ffff8880340b2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x171/0x380 mm/memory.c:3287
2 locks held by syz.0.258/7011:
#0: ffff888033488588 (vm_lock){++++}-{0:0}, at: do_user_addr_fault+0x452/0x1370 arch/x86/mm/fault.c:1328
#1: ffff8880340b2518 (sb_pagefaults){.+.+}-{0:0}, at: do_page_mkwrite+0x171/0x380 mm/memory.c:3287
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xf70/0x12c0 kernel/hung_task.c:437
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 1103 Comm: kworker/u8:6 Not tainted 6.14.0-syzkaller-13423-ga8662bcd2ff1 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: bat_events batadv_nc_worker
RIP: 0010:rcu_read_lock include/linux/rcupdate.h:842 [inline]
RIP: 0010:batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
RIP: 0010:batadv_nc_worker+0x17c/0x1030 net/batman-adv/network-coding.c:719
Code: 48 8d 05 00 00 00 00 50 31 d2 31 f6 48 c7 c7 80 15 3c 8e e8 b6 a8 5a f6 e8 c1 80 32 00 31 ff 41 89 c4 89 c6 e8 d5 c4 7d f6 58 <45> 85 e4 0f 85 7e 0a 00 00 e8 86 c9 7d f6 48 89 d8 48 c1 e8 03 42
RSP: 0018:ffffc90003d9fb30 EFLAGS: 00000293
RAX: ffffffff8b3d75d9 RBX: ffff8880621c5090 RCX: ffffffff8b3d75fb
RDX: ffff888027883c00 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000212 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881249b9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc166270b8 CR3: 000000000e182000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
process_scheduled_works kernel/workqueue.c:3319 [inline]
worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245