ci2 starts bisection 2026-02-20 08:42:16.803035368 +0000 UTC m=+9184.579166103 bisecting fixing commit since 911f602c2237b4e5cad1e1f53bfcf6190a37a764 building syzkaller on 0abd06914a0618dff2f4b80e8d3c0bfb50121eb1 ensuring issue is reproducible on original commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: b65e77210d61d8ad96009722c0ffa15d386cdbed3b86df2ed691c29df7877b50 all runs: crashed: kernel BUG in mark_buffer_dirty_inode representative crash: kernel BUG in mark_buffer_dirty_inode, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: c6973ae0e976804e52e465ee5a49792705bbe0e061d066fe64276c64564a3d47 all runs: crashed: kernel BUG in mark_buffer_dirty_inode representative crash: kernel BUG in mark_buffer_dirty_inode, types: [BUG] the bug reproduces without the instrumentation disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed kconfig minimization: base=4788 full=6026 leaves diff=248 split chunks (needed=false): <248> split chunk #0 of len 248 into 5 parts testing without sub-chunk 1/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: d5f5a97d042d6b2e95f18d71a97760669e41e0f36ac7992efbc8ab2e59229022 all runs: crashed: kernel BUG in mark_buffer_dirty_inode representative crash: kernel BUG in mark_buffer_dirty_inode, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: 74296bed7283bf2cf7f5f17d9e8272aff2f68caa5ed19f6985b145d4caf0087c all runs: crashed: kernel BUG in mark_buffer_dirty_inode representative crash: kernel BUG in mark_buffer_dirty_inode, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: f96ba75479881e90fcfc227e2fcaba8fbb6b22ed59e84ee78d759b2662e44d65 all runs: crashed: kernel BUG in mark_buffer_dirty_inode representative crash: kernel BUG in mark_buffer_dirty_inode, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [atomic_sleep hang memleak ubsan kasan locking], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: bf2b8b53bf9435ee799b9882414a82c73822be3180b46b4bb4734182543bee92 all runs: crashed: kernel BUG in mark_buffer_dirty_inode representative crash: kernel BUG in mark_buffer_dirty_inode, types: [BUG] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 911f602c2237b4e5cad1e1f53bfcf6190a37a764 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 failed building 911f602c2237b4e5cad1e1f53bfcf6190a37a764: net/socket.c:1128:(.text+0x837): undefined reference to `wext_handle_ioctl' net/socket.c:3397:(.text+0xa28): undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346:(.text+0x109): undefined reference to `wext_proc_exit' net/core/net-procfs.c:330:(.text+0x1e4): undefined reference to `wext_proc_init' minimized to 48 configs; suspects: [HID_ZEROPLUS USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE USB_NET_DM9601 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 USB_SERIAL_FTDI_SIO 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 USB_XHCI_PCI_RENESAS WLAN WLAN_VENDOR_ATH WLAN_VENDOR_ATMEL WLAN_VENDOR_BROADCOM WLAN_VENDOR_INTERSIL WLAN_VENDOR_MARVELL WLAN_VENDOR_MEDIATEK WLAN_VENDOR_MICROCHIP WLAN_VENDOR_RALINK WLAN_VENDOR_REALTEK WLAN_VENDOR_RSI WLAN_VENDOR_ZYDAS ZEROPLUS_FF] disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing current HEAD e8b14e1cefe8a3049a46a48685bf937ca244949d testing commit e8b14e1cefe8a3049a46a48685bf937ca244949d gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.44 kernel signature: e325645dba722cbc7cf3ab43edc3b911252c9ee106e7803a74c0f98991c42d31 all runs: crashed: kernel BUG in mark_buffer_dirty_inode representative crash: kernel BUG in mark_buffer_dirty_inode, types: [BUG] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 58m31.956529732s (build: 21m55.304044026s, test: 34m55.749655026s) crash still not fixed or there were kernel test errors commit msg: Merge 5.10.250 into android13-5.10-lts crash: kernel BUG in mark_buffer_dirty_inode ------------[ cut here ]------------ kernel BUG at fs/buffer.c:581! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 0 PID: 487 Comm: syz.4.21 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:mark_buffer_dirty_inode+0xe1/0xf0 fs/buffer.c:581 Code: b0 00 00 00 4c 89 7b 48 48 89 4b 50 4c 89 31 4c 89 6b 58 4c 89 e7 e8 fe 35 a1 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b 90 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 55 49 RSP: 0018:ffffc90000873bc8 EFLAGS: 00010287 RAX: ffff888108cb5a90 RBX: ffff88810e2d2c98 RCX: ffff88810e00e8e8 RDX: ffffea00046b12c7 RSI: ffff88810e00e8e8 RDI: ffff88810e421280 RBP: ffffc90000873bf8 R08: ffff88810e2d2c98 R09: ffff88811ac4cbf8 R10: 0000000000000004 R11: ffff888108cb6734 R12: ffff888108cb6690 R13: ffff888108cb5a90 R14: ffffffff825e9610 R15: 000000000000050c FS: 00005555710b7500(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3bf2873d58 CR3: 000000011ab7e000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __ext4_handle_dirty_metadata+0x9c/0x1c0 fs/ext4/ext4_jbd2.c:362 ext4_xattr_release_block+0x1fb/0x2d0 fs/ext4/xattr.c:1292 ext4_xattr_delete_inode+0x2ce/0x430 fs/ext4/xattr.c:2934 ext4_evict_inode+0x325/0x750 fs/ext4/inode.c:300 evict+0x11a/0x300 fs/inode.c:612 iput_final fs/inode.c:1736 [inline] iput.part.0+0x17a/0x1d0 fs/inode.c:1762 iput+0x17/0x20 fs/inode.c:1749 dentry_unlink_inode+0xc5/0x110 fs/dcache.c:378 __dentry_kill+0xea/0x180 fs/dcache.c:583 dentry_kill fs/dcache.c:721 [inline] dput+0x14b/0x390 fs/dcache.c:883 __fput+0x112/0x230 fs/file_table.c:294 ____fput+0x9/0x10 fs/file_table.c:314 task_work_run+0x5c/0x90 kernel/task_work.c:189 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:172 [inline] exit_to_user_mode_prepare+0x150/0x160 kernel/entry/common.c:199 syscall_exit_to_user_mode+0x27/0x160 kernel/entry/common.c:274 do_syscall_64+0x3f/0x50 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f30a4ac4539 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4fa0a2b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f30a4d31da0 RCX: 00007f30a4ac4539 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f30a4d31da0 R08: 00007f30a4d30038 R09: 0000000000000000 R10: 000000000003fdb0 R11: 0000000000000246 R12: 000000000000d896 R13: 00007f30a4d3009c R14: 000000000000d639 R15: 00007f30a4d30090 Modules linked in: ---[ end trace c549b02ff4843ede ]--- RIP: 0010:mark_buffer_dirty_inode+0xe1/0xf0 fs/buffer.c:581 Code: b0 00 00 00 4c 89 7b 48 48 89 4b 50 4c 89 31 4c 89 6b 58 4c 89 e7 e8 fe 35 a1 00 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b 90 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 55 49 RSP: 0018:ffffc90000873bc8 EFLAGS: 00010287 RAX: ffff888108cb5a90 RBX: ffff88810e2d2c98 RCX: ffff88810e00e8e8 RDX: ffffea00046b12c7 RSI: ffff88810e00e8e8 RDI: ffff88810e421280 RBP: ffffc90000873bf8 R08: ffff88810e2d2c98 R09: ffff88811ac4cbf8