syzbot

INFO: task syz.2.368:9544 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc7-syzkaller-00189-g595523945be0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.368       state:D stack:21264 pid:9544  tgid:9476  ppid:9148   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 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:818 [inline]
 bch2_fallocate_dispatch+0x1e2/0x540 fs/bcachefs/fs-io.c:771
 vfs_fallocate+0x569/0x6e0 fs/open.c:327
 do_vfs_ioctl+0x258c/0x2e40 fs/ioctl.c:885
 __do_sys_ioctl fs/ioctl.c:904 [inline]
 __se_sys_ioctl+0x80/0x170 fs/ioctl.c:892
 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: 0033:0x7f1d03b85d29
RSP: 002b:00007f1d049c1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1d03d76080 RCX: 00007f1d03b85d29
RDX: 0000000020000100 RSI: 0000000040305828 RDI: 0000000000000004
RBP: 00007f1d03c01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1d03d76080 R15: 00007ffeb324dd68
 </TASK>
INFO: task syz.2.368:9545 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc7-syzkaller-00189-g595523945be0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.368       state:D stack:28208 pid:9545  tgid:9476  ppid:9148   flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x17fb/0x4be0 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 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:818 [inline]
 bch2_write_iter+0x13a/0x2c10 fs/bcachefs/fs-io-buffered.c:1040
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xaeb/0xd30 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 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: 0033:0x7f1d03b85d29
RSP: 002b:00007f1d049a0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1d03d76160 RCX: 00007f1d03b85d29
RDX: 0000000000000090 RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f1d03c01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1d03d76160 R15: 00007ffeb324dd68
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc7-syzkaller-00189-g595523945be0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __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:234 [inline]
 watchdog+0xff6/0x1040 kernel/hung_task.c:397
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 1086 Comm: kworker/u8:5 Not tainted 6.13.0-rc7-syzkaller-00189-g595523945be0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:cfg80211_inform_single_bss_data+0x8ec/0x2070 net/wireless/scan.c:2269
Code: 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 1e 12 00 00 88 9c 24 67 01 00 00 49 8d 7f 68 48 89 f8 48 c1 e8 03 42 0f b6 04 28 <84> c0 0f 85 16 12 00 00 44 89 b4 24 08 01 00 00 4c 89 f7 48 c7 c6
RSP: 0018:ffffc900000070c0 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888026f08000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffc900000071c8
RBP: ffffc900000072d0 R08: ffffffff8b0ffcd0 R09: 1ffff92000000e43
R10: dffffc0000000000 R11: fffff52000000e44 R12: ffffc900000076e0
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000007160
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055708f106d88 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 cfg80211_inform_bss_data+0x3ce/0x5e80 net/wireless/scan.c:3189
 cfg80211_inform_bss_frame_data+0x3bb/0x720 net/wireless/scan.c:3284
 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x526/0x9c0 net/mac80211/scan.c:340
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5232 [inline]
 ieee80211_rx_list+0x2c44/0x3810 net/mac80211/rx.c:5469
 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5492
 ieee80211_rx include/net/mac80211.h:5166 [inline]
 ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:441
 tasklet_action_common+0x426/0x620 kernel/softirq.c:811
 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561
 do_softirq+0x11b/0x1e0 kernel/softirq.c:462
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 cfg80211_inform_single_bss_data+0x1707/0x2070 net/wireless/scan.c:2350
 cfg80211_inform_bss_data+0x3ce/0x5e80 net/wireless/scan.c:3189
 cfg80211_inform_bss_frame_data+0x3bb/0x720 net/wireless/scan.c:3284
 ieee80211_bss_info_update+0x8a7/0xbc0 net/mac80211/scan.c:226
 ieee80211_rx_bss_info net/mac80211/ibss.c:1101 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1580 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1969/0x2d70 net/mac80211/ibss.c:1607
 ieee80211_iface_process_skb net/mac80211/iface.c:1613 [inline]
 ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1667
 cfg80211_wiphy_work+0x2db/0x480 net/wireless/core.c:440
 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+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>