syzbot


WARNING in free_netdev (2)

Status: upstream: reported syz repro on 2025/01/17 22:44
Subsystems: bluetooth wireless
[Documentation on labels]
Reported-by: syzbot+85ff1051228a04613a32@syzkaller.appspotmail.com
First crash: 23h41m, last: 25m
Discussions (2)
Title Replies (including bot) Last reply
[PATCH net-next] net: destroy dev->lock later in free_netdev() 2 (2) 2025/01/17 23:00
[syzbot] [bluetooth?] [wireless?] WARNING in free_netdev (2) 0 (1) 2025/01/17 22:44
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in free_netdev net 4080 1060d 1102d 20/28 fixed on 2022/03/08 16:11
Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/01/17 22:21 17m edumazet@google.com patch net-next error

Sample crash report:
batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
hsr_slave_0: entered promiscuous mode
hsr_slave_1: entered promiscuous mode
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 5928 at kernel/locking/mutex.c:564 __mutex_lock_common kernel/locking/mutex.c:564 [inline]
WARNING: CPU: 1 PID: 5928 at kernel/locking/mutex.c:564 __mutex_lock+0xdac/0xee0 kernel/locking/mutex.c:735
Modules linked in:
CPU: 1 UID: 0 PID: 5928 Comm: syz-executor Not tainted 6.13.0-rc7-syzkaller-01131-g8d20dcda404d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:564 [inline]
RIP: 0010:__mutex_lock+0xdac/0xee0 kernel/locking/mutex.c:735
Code: 0f b6 04 38 84 c0 0f 85 1a 01 00 00 83 3d 6f 40 4c 04 00 75 19 90 48 c7 c7 60 84 0a 8c 48 c7 c6 00 85 0a 8c e8 f5 dc 91 f5 90 <0f> 0b 90 90 90 e9 c7 f3 ff ff 90 0f 0b 90 e9 29 f8 ff ff 90 0f 0b
RSP: 0018:ffffc90003d57580 EFLAGS: 00010246
RAX: 82bdb849349c5100 RBX: ffff8880118c4cb0 RCX: ffff88802e369e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003d57710 R08: ffffffff81602ac2 R09: 1ffff110170e519a
R10: dffffc0000000000 R11: ffffed10170e519b R12: 0000000000000000
R13: 0000000000000000 R14: 1ffff920007aaec4 R15: dffffc0000000000
FS:  000055555fe5e500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555d5a3d0950 CR3: 000000003327a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 netdev_lock include/linux/netdevice.h:2691 [inline]
 __netif_napi_del include/linux/netdevice.h:2829 [inline]
 netif_napi_del include/linux/netdevice.h:2848 [inline]
 free_netdev+0x2d9/0x610 net/core/dev.c:11621
 netdev_run_todo+0xf21/0x10d0 net/core/dev.c:11189
 nsim_destroy+0x3c3/0x620 drivers/net/netdevsim/netdev.c:1028
 __nsim_dev_port_del+0x14b/0x1b0 drivers/net/netdevsim/dev.c:1428
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1440 [inline]
 nsim_dev_reload_destroy+0x28a/0x490 drivers/net/netdevsim/dev.c:1661
 nsim_drv_remove+0x58/0x160 drivers/net/netdevsim/dev.c:1676
 device_remove drivers/base/dd.c:567 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x4a9/0x7c0 drivers/base/dd.c:1296
 bus_remove_device+0x34f/0x420 drivers/base/bus.c:576
 device_del+0x57a/0x9b0 drivers/base/core.c:3854
 device_unregister+0x20/0xc0 drivers/base/core.c:3895
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline]
 del_device_store+0x363/0x480 drivers/net/netdevsim/bus.c:226
 kernfs_fop_write_iter+0x3a0/0x500 fs/kernfs/file.c:334
 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: 0033:0x7f87063847df
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48
RSP: 002b:00007fffa8ad2210 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f87063847df
RDX: 0000000000000001 RSI: 00007fffa8ad2260 RDI: 0000000000000005
RBP: 00007f8706402d15 R08: 0000000000000000 R09: 00007fffa8ad2067
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007fffa8ad2260 R14: 00007f87070a4620 R15: 0000000000000003
 </TASK>

Crashes (64):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/18 01:11 net-next 8d20dcda404d 953d1c45 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/18 00:55 net-next 8d20dcda404d 953d1c45 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 22:25 net-next 8d20dcda404d 953d1c45 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 21:12 net-next 8d20dcda404d 953d1c45 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 20:14 net-next 8d20dcda404d 953d1c45 .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 07:15 net-next 8d20dcda404d f9e07a6e .config console log report syz / log [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 23:48 net-next 8d20dcda404d 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 19:51 net-next 8d20dcda404d 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 19:36 net-next 8d20dcda404d 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 19:23 net-next 8d20dcda404d 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 18:55 net-next 8d20dcda404d 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 16:30 net-next 8d20dcda404d 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 15:41 net-next 8d20dcda404d 953d1c45 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 12:32 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 12:29 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 11:43 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 11:40 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 11:29 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 11:10 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 11:07 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 09:44 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 09:44 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 06:39 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 06:18 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 05:46 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:22 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:20 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:19 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:18 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:17 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:16 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:15 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:15 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:14 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:12 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:09 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:09 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:06 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:06 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:01 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 03:01 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 02:45 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 02:20 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 02:20 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 02:11 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 02:10 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
2025/01/17 02:06 net-next 8d20dcda404d f9e07a6e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce WARNING in free_netdev
* Struck through repros no longer work on HEAD.