ci2 starts bisection 2025-06-29 04:39:15.46541141 +0000 UTC m=+110155.171332388
bisecting fixing commit since 44db4837f75e09037bdef33d1b9d78100d41e2b7
building syzkaller on 163f510d99dcf7239e56cef53bbca39db1f2fd9b
ensuring issue is reproducible on original commit 44db4837f75e09037bdef33d1b9d78100d41e2b7

testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 6f563f8941c3556c6a9a8ce8b47b73b5a35415d8aafeca59ed962c2bd4c1b264
all runs: crashed: kernel BUG in mb_mark_used
representative crash: kernel BUG in mb_mark_used, types: [BUG]
check whether we can drop unnecessary instrumentation
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: 374457e912f3ec9c6166c2ec4efc32b525fb094f2e7ea0fe6b5861aa95cd5b22
all runs: crashed: kernel BUG in mb_mark_used
representative crash: kernel BUG in mb_mark_used, types: [BUG]
the bug reproduces without the instrumentation
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
kconfig minimization: base=5186 full=6549 leaves diff=266
split chunks (needed=false): <266>
split chunk #0 of len 266 into 5 parts
testing without sub-chunk 1/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: e4e6814d3cccb1b1bde7fc641b369b18828f1bc586b52ca4057d060a57391c76
all runs: crashed: kernel BUG in mb_mark_used
representative crash: kernel BUG in mb_mark_used, types: [BUG]
the chunk can be dropped
testing without sub-chunk 2/5
disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: d90a2ad5e570a8d54ba7314c2d31c9e6148469bd3a3769f4a656ec941bbbce7c
all runs: crashed: kernel BUG in mb_mark_used
representative crash: kernel BUG in mb_mark_used, types: [BUG]
the chunk can be dropped
testing without sub-chunk 3/5
disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: e4d66306bf0de4995740e753d2ec400bd6e99c1ad15792b20f76f190e1d9bd4b
all runs: crashed: kernel BUG in mb_mark_used
representative crash: kernel BUG in mb_mark_used, types: [BUG]
the chunk can be dropped
testing without sub-chunk 4/5
disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed
testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: b9eab5e870f7acbf38d9a8f28ad9f03486e43c01b4aee292e0d63e8a31156fed
all runs: crashed: kernel BUG in mb_mark_used
representative crash: kernel BUG in mb_mark_used, types: [BUG]
the chunk can be dropped
testing without sub-chunk 5/5
disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
failed building 44db4837f75e09037bdef33d1b9d78100d41e2b7: ld.lld: error: undefined symbol: wext_proc_init
ld.lld: error: undefined symbol: wext_proc_exit
ld.lld: error: undefined symbol: wext_handle_ioctl
ld.lld: error: undefined symbol: compat_wext_handle_ioctl
minimized to 50 configs; suspects: [HID_ZEROPLUS USB_NET_GL620A USB_NET_MCS7830 USB_NET_NET1080 USB_NET_PLUSB USB_NET_RNDIS_HOST USB_NET_SMSC75XX USB_NET_SMSC95XX USB_NET_SR9700 USB_NET_SR9800 USB_NET_ZAURUS USB_OHCI_HCD USB_OHCI_HCD_PCI USB_OHCI_HCD_PLATFORM USB_OTG USB_OTG_FSM USB_PRINTER USB_SERIAL_GENERIC USB_SERIAL_PL2303 USB_STORAGE_ALAUDA USB_STORAGE_CYPRESS_ATACB USB_STORAGE_DATAFAB USB_STORAGE_FREECOM USB_STORAGE_ISD200 USB_STORAGE_JUMPSHOT USB_STORAGE_KARMA USB_STORAGE_ONETOUCH USB_STORAGE_SDDR09 USB_STORAGE_SDDR55 USB_STORAGE_USBAT USB_TRANCEVIBRATOR USB_U_AUDIO USB_U_ETHER USB_U_SERIAL USB_WDM V4L2_ASYNC V4L2_FWNODE VIDEO_CAMERA_SENSOR WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_PURELIFI WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_SILABS WLAN_VENDOR_ZYDAS X86_X32_ABI ZEROPLUS_FF]
disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed
testing current HEAD 36d69f6a49eb50a965ad3080f12ee8c19bc38529
testing commit 36d69f6a49eb50a965ad3080f12ee8c19bc38529 gcc
compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6
kernel signature: abd1c208e6ae8bfe3e2f865e2aad45056717de8758b8a2c3c9add496ad586a37
all runs: crashed: kernel BUG in mb_mark_used
representative crash: kernel BUG in mb_mark_used, types: [BUG]
crash still not fixed/happens on the oldest tested release
revisions tested: 7, total time: 1h37m30.068130862s (build: 54m5.060752606s, test: 38m18.043337644s)
crash still not fixed or there were kernel test errors
commit msg: ANDROID: 16K: Use vma_area slab cache for pad VMA
crash: kernel BUG in mb_mark_used
ext4 filesystem being mounted at /0/file0 supports timestamps until 2038-01-19 (0x7fffffff)
------------[ cut here ]------------
kernel BUG at fs/ext4/mballoc.c:1933!
invalid opcode: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 462 Comm: syz.2.16 Not tainted 6.1.141-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:mb_mark_used+0x46f/0x480 fs/ext4/mballoc.c:1933
Code: ff 48 0f ab 3e bf 01 00 00 00 eb cf 44 89 f8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41
RSP: 0018:ffffc900008ebb70 EFLAGS: 00010207
RAX: 0000000080000000 RBX: ffffc900008ebcb8 RCX: ffff88810e7aa800
RDX: 000000000000000c RSI: ffffffff80000000 RDI: 0000000000008000
RBP: ffffc900008ebb98 R08: 0000000000000001 R09: 0000000000007fff
R10: 0000000000008001 R11: 0000000000000000 R12: 000000007ffffff4
R13: 000000007ffffff4 R14: ffffc900008ebc20 R15: 000000000000000c
FS:  00007f1f3652f6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000015000 CR3: 000000010ef3f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_trim_extent fs/ext4/mballoc.c:6446 [inline]
 ext4_try_to_trim_range+0x268/0x580 fs/ext4/mballoc.c:6506
 ext4_trim_all_free fs/ext4/mballoc.c:6568 [inline]
 ext4_trim_fs+0x366/0x500 fs/ext4/mballoc.c:6659
 __ext4_ioctl fs/ext4/ioctl.c:1491 [inline]
 ext4_ioctl+0x451/0x1640 fs/ext4/ioctl.c:1614
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0x77/0xc0 fs/ioctl.c:856
 __x64_sys_ioctl+0x18/0x20 fs/ioctl.c:856
 x64_sys_call+0x58b/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1f3578d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1f3652f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1f359a5fa0 RCX: 00007f1f3578d169
RDX: 0000400000000b40 RSI: 00000000c0185879 RDI: 0000000000000006
RBP: 00007f1f3580e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1f359a5fa0 R15: 00007fffd34f2a58
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:mb_mark_used+0x46f/0x480 fs/ext4/mballoc.c:1933
Code: ff 48 0f ab 3e bf 01 00 00 00 eb cf 44 89 f8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b 0f 0b <0f> 0b 0f 0b 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41
RSP: 0018:ffffc900008ebb70 EFLAGS: 00010207
RAX: 0000000080000000 RBX: ffffc900008ebcb8 RCX: ffff88810e7aa800
RDX: 000000000000000c RSI: ffffffff80000000 RDI: 0000000000008000
RBP: ffffc900008ebb98 R08: 0000000000000001 R09: 0000000000007fff
R10: 0000000000008001 R11: 0000000000000000 R12: 000000007ffffff4
R13: 000000007ffffff4 R14: ffffc900008ebc20 R15: 000000000000000c
FS:  00007f1f3652f6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000400000015000 CR3: 000000010ef3f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400