ci2 starts bisection 2025-07-30 08:35:45.448745527 +0000 UTC m=+45516.771222041 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 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: bcf122da8d5a4cb72bbb8b81267dd2befeaa47140cfde93fdc77024759b97029 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 [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 7d5ed1053411876d06a0b4af82308a2ce3fa1b3c04004fb496517e636bbf4b9b 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 [hang memleak ubsan kasan locking atomic_sleep], 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 [kasan locking atomic_sleep hang memleak ubsan], they are not needed testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: b63968003a8a8753c380706656a3f7b81748ec918b2862a90fbdbd9403e2899a 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 [locking atomic_sleep hang memleak ubsan kasan], they are not needed testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 92b6aff03bd48adfb97e161464fea0d58a8dea07538ac3bd546510b7c078e059 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 [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 9e977f33c4f00987dd4b612fcb49ff83f7a3336bf55093195c1e627f5cf6729f 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 [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 518a4bb0df45eb3c5bcb8526cd5fe3fb9f3dee7fefbafff93f03dfdbfc201d9a 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 [ubsan kasan locking atomic_sleep hang memleak], they are not needed testing commit 44db4837f75e09037bdef33d1b9d78100d41e2b7 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 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 [hang memleak ubsan kasan locking atomic_sleep], they are not needed testing current HEAD 19fbea31785113700731f4b458d7e20d05777729 testing commit 19fbea31785113700731f4b458d7e20d05777729 gcc compiler: Debian clang version 20.1.7 (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 kernel signature: 40b559d475185edea1f4d19e0fe4939216770a3251cad7b6fd47c2db76507ab3 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: 1h44m39.566305252s (build: 1h7m34.123678525s, test: 32m58.855226376s) crash still not fixed or there were kernel test errors commit msg: ANDROID: KVM: arm64: Don't copy pvmfw pages more than once 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: 499 Comm: syz.2.16 Not tainted 6.1.145-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:ffffc90000a0fb70 EFLAGS: 00010207 RAX: 0000000080000000 RBX: ffffc90000a0fcb8 RCX: ffff88810b1cd000 RDX: 000000000000000c RSI: ffffffff80000000 RDI: 0000000000008000 RBP: ffffc90000a0fb98 R08: 0000000000000001 R09: 0000000000007fff R10: 0000000000008001 R11: 0000000000000000 R12: 000000007ffffff4 R13: 000000007ffffff4 R14: ffffc90000a0fc20 R15: 000000000000000c FS: 00007f49b97ec6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000400000015000 CR3: 0000000109729000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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: 0033:0x7f49b898d169 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:00007f49b97ec038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f49b8ba5fa0 RCX: 00007f49b898d169 RDX: 0000400000000b40 RSI: 00000000c0185879 RDI: 0000000000000006 RBP: 00007f49b8a0e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f49b8ba5fa0 R15: 00007ffdcf5813b8 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:ffffc90000a0fb70 EFLAGS: 00010207 RAX: 0000000080000000 RBX: ffffc90000a0fcb8 RCX: ffff88810b1cd000 RDX: 000000000000000c RSI: ffffffff80000000 RDI: 0000000000008000 RBP: ffffc90000a0fb98 R08: 0000000000000001 R09: 0000000000007fff R10: 0000000000008001 R11: 0000000000000000 R12: 000000007ffffff4 R13: 000000007ffffff4 R14: ffffc90000a0fc20 R15: 000000000000000c FS: 00007f49b97ec6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000400000015000 CR3: 0000000109729000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400