INFO: task kworker/u8:3:52 blocked for more than 143 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D stack:19568 pid:52 tgid:52 ppid:2 task_flags:0x4208160 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:7)
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
io_schedule+0x8d/0x110 kernel/sched/core.c:7689
lmGroupCommit+0x79f/0xc10 fs/jfs/jfs_logmgr.c:713
txCommit+0x5f6d/0x6b90 fs/jfs/jfs_txnmgr.c:1304
jfs_commit_inode+0x36a/0x590 fs/jfs/inode.c:108
jfs_write_inode+0x143/0x220 fs/jfs/inode.c:132
write_inode fs/fs-writeback.c:1525 [inline]
__writeback_single_inode+0x708/0x10d0 fs/fs-writeback.c:1745
writeback_sb_inodes+0x820/0x1360 fs/fs-writeback.c:1976
wb_writeback+0x413/0xb80 fs/fs-writeback.c:2156
wb_do_writeback fs/fs-writeback.c:2303 [inline]
wb_workfn+0x410/0x1080 fs/fs-writeback.c:2343
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task jfsCommit:115 blocked for more than 144 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:jfsCommit state:D stack:24920 pid:115 tgid:115 ppid:2 task_flags:0x200040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read_nested+0x709/0xa50 kernel/locking/rwsem.c:1650
diUpdatePMap+0x9a/0xd90 fs/jfs/jfs_imap.c:2747
txUpdateMap+0x81c/0xb10 fs/jfs/jfs_txnmgr.c:2356
txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
jfs_lazycommit+0x49a/0xb80 fs/jfs/jfs_txnmgr.c:2733
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
INFO: task syz.7.774:14182 blocked for more than 144 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.774 state:D stack:22776 pid:14182 tgid:14181 ppid:13474 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
io_schedule+0x8d/0x110 kernel/sched/core.c:7689
TXN_SLEEP_DROP_LOCK fs/jfs/jfs_txnmgr.c:125 [inline]
txLock+0xa9e/0x1cf0 fs/jfs/jfs_txnmgr.c:847
diWrite+0x42f/0x19b0 fs/jfs/jfs_imap.c:654
txCommit+0xa1a/0x6b90 fs/jfs/jfs_txnmgr.c:1255
duplicateIXtree+0x33f/0x550 fs/jfs/jfs_imap.c:3019
diNewIAG fs/jfs/jfs_imap.c:2597 [inline]
diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
diAllocAG+0x17dc/0x1e50 fs/jfs/jfs_imap.c:1669
diAlloc+0x1d2/0x1630 fs/jfs/jfs_imap.c:1590
ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56
jfs_create+0x1be/0xbb0 fs/jfs/namei.c:92
lookup_open fs/namei.c:3651 [inline]
open_last_lookups fs/namei.c:3750 [inline]
path_openat+0x193c/0x3590 fs/namei.c:3986
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
do_sys_open fs/open.c:1442 [inline]
__do_sys_openat fs/open.c:1458 [inline]
__se_sys_openat fs/open.c:1453 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1453
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff64fb8cda9
RSP: 002b:00007ff6509a4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ff64fda5fa0 RCX: 00007ff64fb8cda9
RDX: 0000000000143042 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007ff64fc0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff64fda5fa0 R15: 00007ffd1fbe3a08
INFO: task syz.7.774:14196 blocked for more than 145 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.774 state:D stack:26608 pid:14196 tgid:14181 ppid:13474 task_flags:0x400140 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
wb_wait_for_completion+0x166/0x290 fs/fs-writeback.c:216
sync_inodes_sb+0x28d/0xb50 fs/fs-writeback.c:2821
sync_filesystem+0x176/0x230 fs/sync.c:64
jfs_reconfigure+0xd6/0x9d0 fs/jfs/super.c:370
reconfigure_super+0x43a/0x870 fs/super.c:1083
vfs_cmd_reconfigure fs/fsopen.c:262 [inline]
vfs_fsconfig_locked fs/fsopen.c:291 [inline]
__do_sys_fsconfig fs/fsopen.c:467 [inline]
__se_sys_fsconfig+0xb74/0xf60 fs/fsopen.c:344
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff64fb8cda9
RSP: 002b:00007ff650983038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007ff64fda6080 RCX: 00007ff64fb8cda9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007ff64fc0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff64fda6080 R15: 00007ffd1fbe3a08
INFO: task syz.7.774:14197 blocked for more than 146 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.774 state:D stack:26712 pid:14197 tgid:14181 ppid:13474 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:865 [inline]
open_last_lookups fs/namei.c:3747 [inline]
path_openat+0x89a/0x3590 fs/namei.c:3986
do_filp_open+0x27f/0x4e0 fs/namei.c:4016
do_sys_openat2+0x13e/0x1d0 fs/open.c:1427
do_sys_open fs/open.c:1442 [inline]
__do_sys_creat fs/open.c:1520 [inline]
__se_sys_creat fs/open.c:1514 [inline]
__x64_sys_creat+0x123/0x170 fs/open.c:1514
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff64fb8cda9
RSP: 002b:00007ff650962038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007ff64fda6160 RCX: 00007ff64fb8cda9
RDX: 0000000000000000 RSI: 0000000000000031 RDI: 0000000020000040
RBP: 00007ff64fc0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff64fda6160 R15: 00007ffd1fbe3a08
INFO: task syz.7.774:14198 blocked for more than 146 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.774 state:D stack:23872 pid:14198 tgid:14181 ppid:13474 task_flags:0x400140 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
inode_lock_shared include/linux/fs.h:875 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1809
walk_component fs/namei.c:2114 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2479
path_parentat fs/namei.c:2683 [inline]
__filename_parentat+0x2a7/0x740 fs/namei.c:2707
filename_parentat fs/namei.c:2725 [inline]
do_unlinkat+0x189/0x830 fs/namei.c:4564
__do_sys_unlinkat fs/namei.c:4632 [inline]
__se_sys_unlinkat fs/namei.c:4625 [inline]
__x64_sys_unlinkat+0xcc/0xf0 fs/namei.c:4625
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff64fb8cda9
RSP: 002b:00007ff650941038 EFLAGS: 00000246 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 00007ff64fda6240 RCX: 00007ff64fb8cda9
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: ffffffffffffff9c
RBP: 00007ff64fc0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff64fda6240 R15: 00007ffd1fbe3a08
INFO: task syz.7.774:14199 blocked for more than 147 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.774 state:D stack:27488 pid:14199 tgid:14181 ppid:13474 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
inode_lock_shared include/linux/fs.h:875 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1809
walk_component fs/namei.c:2114 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2479
path_parentat fs/namei.c:2683 [inline]
__filename_parentat+0x2a7/0x740 fs/namei.c:2707
filename_parentat fs/namei.c:2725 [inline]
do_renameat2+0x373/0x13f0 fs/namei.c:5133
__do_sys_rename fs/namei.c:5273 [inline]
__se_sys_rename fs/namei.c:5271 [inline]
__x64_sys_rename+0x82/0x90 fs/namei.c:5271
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff64fb8cda9
RSP: 002b:00007ff650920038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007ff64fda6320 RCX: 00007ff64fb8cda9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000020000080
RBP: 00007ff64fc0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff64fda6320 R15: 00007ffd1fbe3a08
INFO: task syz.7.774:14200 blocked for more than 147 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.774 state:D stack:27488 pid:14200 tgid:14181 ppid:13474 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
rwsem_down_write_slowpath+0xeee/0x13b0 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1e0/0x220 kernel/locking/rwsem.c:1694
inode_lock_nested include/linux/fs.h:900 [inline]
do_rmdir+0x263/0x580 fs/namei.c:4443
__do_sys_rmdir fs/namei.c:4474 [inline]
__se_sys_rmdir fs/namei.c:4472 [inline]
__x64_sys_rmdir+0x47/0x50 fs/namei.c:4472
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff64fb8cda9
RSP: 002b:00007ff6508ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007ff64fda6400 RCX: 00007ff64fb8cda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007ff64fc0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff64fda6400 R15: 00007ffd1fbe3a08
INFO: task syz.7.774:14201 blocked for more than 148 seconds.
Not tainted 6.14.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.774 state:D stack:27488 pid:14201 tgid:14181 ppid:13474 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5377 [inline]
__schedule+0x18bc/0x4c40 kernel/sched/core.c:6764
__schedule_loop kernel/sched/core.c:6841 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6856
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
inode_lock_shared include/linux/fs.h:875 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1809
walk_component+0x2e1/0x410 fs/namei.c:2114
lookup_last fs/namei.c:2612 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2636
filename_lookup+0x2a3/0x670 fs/namei.c:2665
do_linkat+0x13f/0x6f0 fs/namei.c:4845
__do_sys_linkat fs/namei.c:4893 [inline]
__se_sys_linkat fs/namei.c:4890 [inline]
__x64_sys_linkat+0xd9/0xf0 fs/namei.c:4890
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff64fb8cda9
RSP: 002b:00007ff64c9ee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000109
RAX: ffffffffffffffda RBX: 00007ff64fda64e0 RCX: 00007ff64fb8cda9
RDX: 0000000000000008 RSI: 0000000020000180 RDI: 0000000000000008
RBP: 00007ff64fc0e2a0 R08: 0000000000000400 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007ff64fda64e0 R15: 00007ffd1fbe3a08
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
#0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#0: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
5 locks held by kworker/u8:0/11:
#0: ffff88801baf3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801baf3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc90000107c60 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90000107c60 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fca1990 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0x17a/0xd60 net/core/net_namespace.c:606
#3: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0xe9/0xaa0 net/core/dev.c:12323
#4: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:334 [inline]
#4: ffffffff8e93dcb8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:996
1 lock held by khungtaskd/30:
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9387e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6746
3 locks held by kworker/u8:3/52:
#0: ffff8881416a2948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff8881416a2948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc90000bc7c60 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc90000bc7c60 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffff88805b02c250 (&jfs_ip->commit_mutex){+.+.}-{4:4}, at: jfs_commit_inode+0x24a/0x590 fs/jfs/inode.c:102
1 lock held by jfsCommit/115:
#0: ffff88805390af50 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diUpdatePMap+0x9a/0xd90 fs/jfs/jfs_imap.c:2747
3 locks held by kworker/u8:7/1144:
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3211 [inline]
#0: ffff88801ac89148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3317
#1: ffffc900041dfc60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3212 [inline]
#1: ffffc900041dfc60 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3317
#2: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:285
1 lock held by dhcpcd/5492:
#0: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:129 [inline]
#0: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: devinet_ioctl+0x31a/0x1ac0 net/ipv4/devinet.c:1129
2 locks held by getty/5586:
#0: ffff888035a620a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
no locks held by syz-executor/5814.
5 locks held by syz.7.774/14182:
#0: ffff888074c4c420 (sb_writers#31){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: inode_lock include/linux/fs.h:865 [inline]
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: open_last_lookups fs/namei.c:3747 [inline]
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: path_openat+0x89a/0x3590 fs/namei.c:3986
#2: ffff88806c9309b0 (&(imap->im_aglock[index])){+.+.}-{4:4}, at: diAlloc+0x1b6/0x1630
#3: ffff88806c930890 (&imap->im_freelock){+.+.}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2460 [inline]
#3: ffff88806c930890 (&imap->im_freelock){+.+.}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
#3: ffff88806c930890 (&imap->im_freelock){+.+.}-{4:4}, at: diAllocAG+0x4b7/0x1e50 fs/jfs/jfs_imap.c:1669
#4: ffff88805390af50 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diNewIAG fs/jfs/jfs_imap.c:2477 [inline]
#4: ffff88805390af50 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
#4: ffff88805390af50 (&jfs_ip->rdwrlock/1){++++}-{4:4}, at: diAllocAG+0x869/0x1e50 fs/jfs/jfs_imap.c:1669
3 locks held by syz.7.774/14196:
#0: ffff88803200a870 (&fc->uapi_mutex){+.+.}-{4:4}, at: __do_sys_fsconfig fs/fsopen.c:465 [inline]
#0: ffff88803200a870 (&fc->uapi_mutex){+.+.}-{4:4}, at: __se_sys_fsconfig+0x9b2/0xf60 fs/fsopen.c:344
#1: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: vfs_cmd_reconfigure fs/fsopen.c:261 [inline]
#1: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: vfs_fsconfig_locked fs/fsopen.c:291 [inline]
#1: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: __do_sys_fsconfig fs/fsopen.c:467 [inline]
#1: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: __se_sys_fsconfig+0xb6a/0xf60 fs/fsopen.c:344
#2: ffff8880253087d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:387 [inline]
#2: ffff8880253087d0 (&bdi->wb_switch_rwsem){+.+.}-{4:4}, at: sync_inodes_sb+0x26e/0xb50 fs/fs-writeback.c:2819
2 locks held by syz.7.774/14197:
#0: ffff888074c4c420 (sb_writers#31){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: inode_lock include/linux/fs.h:865 [inline]
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: open_last_lookups fs/namei.c:3747 [inline]
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: path_openat+0x89a/0x3590 fs/namei.c:3986
1 lock held by syz.7.774/14198:
#0: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:875 [inline]
#0: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
1 lock held by syz.7.774/14199:
#0: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:875 [inline]
#0: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
2 locks held by syz.7.774/14200:
#0: ffff888074c4c420 (sb_writers#31){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:547
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:900 [inline]
#1: ffff88805390bcc8 (&type->i_mutex_dir_key#22/1){+.+.}-{4:4}, at: do_rmdir+0x263/0x580 fs/namei.c:4443
1 lock held by syz.7.774/14201:
#0: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: inode_lock_shared include/linux/fs.h:875 [inline]
#0: ffff88805390bcc8 (&type->i_mutex_dir_key#22){++++}-{4:4}, at: lookup_slow+0x45/0x70 fs/namei.c:1809
1 lock held by syz-executor/14723:
#0: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: tun_detach drivers/net/tun.c:702 [inline]
#0: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3521
1 lock held by syz.4.896/15762:
#0: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
2 locks held by syz-executor/16327:
#0: ffffffff901a6370 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff901a6370 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff901a6370 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x22/0x250 net/core/rtnetlink.c:564
#1: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#1: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:335 [inline]
#1: ffffffff8fcadf08 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0xce2/0x2210 net/core/rtnetlink.c:4020
1 lock held by syz.7.972/16458:
#0: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: __super_lock fs/super.c:58 [inline]
#0: ffff888074c4c0e0 (&type->s_umount_key#90){++++}-{4:4}, at: super_lock+0x27c/0x400 fs/super.c:120
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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:236 [inline]
watchdog+0x1058/0x10a0 kernel/hung_task.c:399
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 81 Comm: kworker/u8:4 Not tainted 6.14.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:unwind_next_frame+0xfc/0x22d0
Code: 00 48 85 db 74 24 48 81 c3 88 00 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 c7 19 00 00 f6 03 03 0f 85 35 18 00 00 <48> 89 6c 24 50 49 8d 6d 35 48 89 e8 48 c1 e8 03 48 89 44 24 28 42
RSP: 0018:ffffc9000215f450 EFLAGS: 00000246
RAX: 1ffff9200042beae RBX: 0000000000000000 RCX: ffffffff9a3ca903
RDX: dffffc0000000000 RSI: ffffffff81896a80 RDI: 0000000000000001
RBP: ffffc9000215f570 R08: 0000000000000006 R09: ffffc9000215f610
R10: ffffc9000215f570 R11: ffffffff81ab1d60 R12: dffffc0000000000
R13: ffffc9000215f520 R14: ffffffff81896a80 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0b03178ab8 CR3: 0000000034742000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x11c/0x150 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
unpoison_slab_object mm/kasan/common.c:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4115 [inline]
slab_alloc_node mm/slub.c:4164 [inline]
kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4216
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1331 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
nsim_dev_trap_report_work+0x261/0xb50 drivers/net/netdevsim/dev.c:851
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
worker_thread+0x870/0xd30 kernel/workqueue.c:3398
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244