ci2 starts bisection 2025-09-19 19:29:56.405455547 +0000 UTC m=+34064.807576660 bisecting fixing commit since 1ac09f5c057146455dc10fccd52a8f5f34039fb0 building syzkaller on ef44b750e8fab8d6d5cb84920680581b13e0d470 ensuring issue is reproducible on original commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: c8cb9259d0a421dd5ba7c494cd5cf366efce8f0ef114d22e8e1fe7d61ba65c5e all runs: crashed: kernel BUG in ext4_inline_data_truncate representative crash: kernel BUG in ext4_inline_data_truncate, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: f6f187ee9238a75f9dedd22910bef40ce7145e1543124918d7c27f30ade85dfb all runs: crashed: kernel BUG in ext4_inline_data_truncate representative crash: kernel BUG in ext4_inline_data_truncate, types: [BUG] the bug reproduces without the instrumentation disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed kconfig minimization: base=5186 full=6548 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 [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: bb683731a18fc35c0f2d555ca11349f08f86cc1209f22ca20dc7d1ed443bba44 all runs: crashed: kernel BUG in ext4_inline_data_truncate representative crash: kernel BUG in ext4_inline_data_truncate, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 86cbc45a7a338972127a2d9a387f2d72c4ab6c5b50a81769ccc69bd5467334b2 all runs: crashed: kernel BUG in ext4_inline_data_truncate representative crash: kernel BUG in ext4_inline_data_truncate, 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 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: d6b6e9fff885ece15a1c254d0a81ff697409a3ce547d297ef6a4ad52e4108a86 all runs: crashed: kernel BUG in ext4_inline_data_truncate representative crash: kernel BUG in ext4_inline_data_truncate, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 028948384ab2319b402c496b689dc725afe4ed4b4dea5a5d5cda3b39eb7f9a8b all runs: crashed: kernel BUG in ext4_inline_data_truncate representative crash: kernel BUG in ext4_inline_data_truncate, 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 1ac09f5c057146455dc10fccd52a8f5f34039fb0 gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 failed building 1ac09f5c057146455dc10fccd52a8f5f34039fb0: 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 [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing current HEAD cd5fca61ddb84d111768fd4a40fd6b7cd5161e5d testing commit cd5fca61ddb84d111768fd4a40fd6b7cd5161e5d gcc compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 kernel signature: 02fbad84a92424cb389b23510a01baf2c85ed494ec5c9bcea38b002b56688843 all runs: crashed: kernel BUG in ext4_inline_data_truncate representative crash: kernel BUG in ext4_inline_data_truncate, types: [BUG] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h27m15.338062876s (build: 32m58.611703787s, test: 50m30.651825981s) crash still not fixed or there were kernel test errors commit msg: FROMGIT: usb: udc: Add trace event for usb_gadget_set_state crash: kernel BUG in ext4_inline_data_truncate ------------[ cut here ]------------ kernel BUG at fs/ext4/inline.c:2005! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 1 PID: 493 Comm: syz.2.16 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:ext4_inline_data_truncate+0x403/0x410 fs/ext4/inline.c:2005 Code: 89 f7 48 89 de e8 7d e4 04 00 85 c0 0f 84 51 fe ff ff 41 89 c5 e9 8d fe ff ff 41 bd f4 ff ff ff e9 36 fe ff ff e8 0d 6f ba 00 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900009e7ba0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888111a935e8 RCX: 0000000000000108 RDX: ffffc900009e7bd8 RSI: ffffc900009e7bb8 RDI: ffff888111a935e8 RBP: ffffc900009e7c48 R08: 0000000000000100 R09: 0000000000000080 R10: 0000000000000001 R11: 0000000000000080 R12: 0000000000000078 R13: ffff888111a934d8 R14: 0000000000000002 R15: 0000000000000010 FS: 0000555558787500(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f85e3779000 CR3: 0000000113295000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_truncate+0x13b/0x470 fs/ext4/inode.c:4247 ext4_evict_inode+0x558/0x750 fs/ext4/inode.c:286 evict+0x1a0/0x300 fs/inode.c:705 iput_final fs/inode.c:1834 [inline] iput+0x1be/0x280 fs/inode.c:1860 dentry_unlink_inode+0x108/0x110 fs/dcache.c:405 __dentry_kill+0x12e/0x200 fs/dcache.c:611 dentry_kill+0x64/0x110 fs/dcache.c:-1 dput+0x3d/0x60 fs/dcache.c:918 __fput+0x120/0x250 fs/file_table.c:328 ____fput+0x9/0x10 fs/file_table.c:348 task_work_run+0x90/0xb0 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f3b5798cde9 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:00007ffe3990a908 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f3b57ba7ba0 RCX: 00007f3b5798cde9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f3b57ba7ba0 R08: 0000000000000000 R09: 000000093990abff R10: 000000000003fd8c R11: 0000000000000246 R12: 000000000000dbe7 R13: 00007ffe3990aa00 R14: ffffffffffffffff R15: 00007ffe3990aa20 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_inline_data_truncate+0x403/0x410 fs/ext4/inline.c:2005 Code: 89 f7 48 89 de e8 7d e4 04 00 85 c0 0f 84 51 fe ff ff 41 89 c5 e9 8d fe ff ff 41 bd f4 ff ff ff e9 36 fe ff ff e8 0d 6f ba 00 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc900009e7ba0 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff888111a935e8 RCX: 0000000000000108 RDX: ffffc900009e7bd8 RSI: ffffc900009e7bb8 RDI: ffff888111a935e8 RBP: ffffc900009e7c48 R08: 0000000000000100 R09: 0000000000000080 R10: 0000000000000001 R11: 0000000000000080 R12: 0000000000000078 R13: ffff888111a934d8 R14: 0000000000000002 R15: 0000000000000010 FS: 0000555558787500(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f85e3771000 CR3: 0000000113295000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400