ci2 starts bisection 2023-12-21 07:22:28.538478818 +0000 UTC m=+114.686975905 bisecting fixing commit since f73aafc29bee0c1674374fd22e8f90f95c91ed3f building syzkaller on 058b3a5a6a945a55767811552eb7b9f4a20307f8 ensuring issue is reproducible on original commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6c4b7480b213512f3f3048d22b5c6545d3a05c2967379c62baa1dc41cc7cdbcc all runs: crashed: kernel BUG in ext4_split_extent_at representative crash: kernel BUG in ext4_split_extent_at, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6e54ccc98371c2deb643dbbdb9d234b9ffa40488b9d9eeb0cb55e3fe569387c2 all runs: crashed: kernel BUG in ext4_split_extent_at representative crash: kernel BUG in ext4_split_extent_at, types: [BUG] the bug reproduces without the instrumentation disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed kconfig minimization: base=5179 full=6523 leaves diff=250 split chunks (needed=false): <250> split chunk #0 of len 250 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 927072c00e295ee01eff4dd3736c4b8e99b0ed796250af0b0170c8e4d81e23da all runs: crashed: kernel BUG in ext4_split_extent_at representative crash: kernel BUG in ext4_split_extent_at, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: fd3ec4b78c357291f4c6407673bfb187bd19b72a97b823631e948829b732b3b5 run #0: crashed: kernel BUG in ext4_split_extent_at run #1: crashed: kernel BUG in ext4_split_extent_at run #2: crashed: kernel BUG in ext4_split_extent_at run #3: OK run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: kernel BUG in ext4_split_extent_at, types: [BUG] testing without sub-chunk 3/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 31ff1fa97957e461815218084d573256503125b8a0116ef2936e1d49965e3e1f all runs: crashed: kernel BUG in ext4_split_extent_at representative crash: kernel BUG in ext4_split_extent_at, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing commit f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce48ed8573ca13c4638f8b9350d7f2eaeef93ddcbb922bfa50856a3c37eb88fa all runs: crashed: kernel BUG in ext4_split_extent_at representative crash: kernel BUG in ext4_split_extent_at, 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 f73aafc29bee0c1674374fd22e8f90f95c91ed3f gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 85d9958d188954b5d74199f42189519ba2d1487965c9246a34be45d48d27424c all runs: crashed: kernel BUG in ext4_split_extent_at representative crash: kernel BUG in ext4_split_extent_at, types: [BUG] the chunk can be dropped minimized to 50 configs; suspects: [CFG80211 COMMON_CLK FB HID_HOLTEK HID_ORTEK HID_PANTHERLORD HID_PENMOUNT HID_PETALYNX HID_PICOLCD_FB HID_PICOLCD_LEDS HID_PID HID_PRIMAX HID_PRODIKEYS HID_RMI HID_SAITEK HID_SAMSUNG HID_SENSOR_CUSTOM_SENSOR HID_SENSOR_HUB HID_SPEEDLINK HID_STEELSERIES HID_SUNPLUS HID_THINGM HID_TIVO HID_TOPSEED HID_TWINHAN HID_WALTOP HID_XINMO HID_ZYDACRON HOLTEK_FF HOTPLUG_PCI HWMON HW_CONSOLE I2C_DESIGNWARE_CORE I2C_DESIGNWARE_PLATFORM I2C_MUX INPUT_JOYSTICK INPUT_LEDS INPUT_MOUSE INPUT_TOUCHSCREEN INTEGRITY INTEGRITY_AUDIT JOYSTICK_XPAD JOYSTICK_XPAD_FF JOYSTICK_XPAD_LEDS KCOV KCOV_ENABLE_COMPARISONS KCOV_INSTRUMENT_ALL LCD_CLASS_DEVICE LOGIG940_FF LOGIRUMBLEPAD2_FF LOGITECH_FF LOGIWHEELS_FF MAC80211 MAC80211_HAS_RC MAC80211_RC_DEFAULT_MINSTREL MAC80211_RC_MINSTREL MEDIA_ANALOG_TV_SUPPORT MEDIA_ATTACH MEDIA_DIGITAL_TV_SUPPORT MEDIA_RADIO_SUPPORT MEDIA_TUNER MFD_CORE NL80211_TESTMODE NOP_USB_XCEIV PAHOLE_HAS_SPLIT_BTF PANTHERLORD_FF RFKILL SND SOUND VT WIRELESS] disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing current HEAD 44702d8fa1b046b52595a03ac7fedc7abc414c42 testing commit 44702d8fa1b046b52595a03ac7fedc7abc414c42 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: d2b770f6c6444bdc571dc8397f96e7c302b07a22208b159bf244eea0c535efe3 all runs: crashed: kernel BUG in ext4_split_extent_at representative crash: kernel BUG in ext4_split_extent_at, types: [BUG] crash still not fixed/happens on the oldest tested release reproducer is flaky (1.00 repro chance estimate) revisions tested: 8, total time: 3h2m42.144717369s (build: 36m51.824256539s, test: 1h37m1.358485823s) crash still not fixed or there were kernel test errors commit msg: FROMLIST: mm: migrate high-order folios in swap cache correctly crash: kernel BUG in ext4_split_extent_at ------------[ cut here ]------------ kernel BUG at fs/ext4/extents.c:3205! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 0 PID: 1247 Comm: syz-executor.3 Not tainted 6.1.57-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:ext4_split_extent_at+0x959/0x980 fs/ext4/extents.c:3205 Code: 0b e9 28 fa ff ff e8 b6 4f c8 ff 0f 0b e9 9b fa ff ff e8 aa 4f c8 ff 0f 0b e9 84 fe ff ff e8 9e 4f c8 ff 0f 0b e8 97 4f c8 ff <0f> 0b e8 90 4f c8 ff 0f 0b e8 b9 41 2d 01 e8 84 4f c8 ff 0f 0b e8 RSP: 0018:ffffc90002497740 EFLAGS: 00010293 RAX: ffffffff816e2c59 RBX: 0000000000000000 RCX: ffff888116ab0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002497810 R08: ffffffff816e241e R09: 000000000000003b R10: 0000000000000002 R11: 00000000ffffffff R12: 0000000000000000 R13: 0000000000000017 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f0a771d96c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002003f000 CR3: 00000001177d9000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_split_extent+0x21c/0x250 fs/ext4/extents.c:3385 ext4_split_convert_extents fs/ext4/extents.c:3714 [inline] ext4_ext_handle_unwritten_extents fs/ext4/extents.c:3876 [inline] ext4_ext_map_blocks+0xeb6/0x2db0 fs/ext4/extents.c:4168 ext4_map_blocks+0x560/0xc20 fs/ext4/inode.c:651 ext4_iomap_alloc fs/ext4/inode.c:3415 [inline] ext4_iomap_begin+0x392/0x4b0 fs/ext4/inode.c:3465 iomap_iter+0x2ed/0x650 fs/iomap/iter.c:74 __iomap_dio_rw+0x635/0xdf0 fs/iomap/direct-io.c:601 iomap_dio_rw+0x41/0x90 fs/iomap/direct-io.c:690 ext4_dio_write_iter fs/ext4/file.c:587 [inline] ext4_file_write_iter+0x7f9/0xdf0 fs/ext4/file.c:698 call_write_iter include/linux/fs.h:2215 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x3ba/0x650 fs/read_write.c:584 ksys_write+0xc3/0x170 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x1d/0x20 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0a7647c959 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0a771d90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0a7659c050 RCX: 00007f0a7647c959 RDX: 0000000000000012 RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00007f0a764d8c88 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f0a7659c050 R15: 00007ffd0bb95a48 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_split_extent_at+0x959/0x980 fs/ext4/extents.c:3205 Code: 0b e9 28 fa ff ff e8 b6 4f c8 ff 0f 0b e9 9b fa ff ff e8 aa 4f c8 ff 0f 0b e9 84 fe ff ff e8 9e 4f c8 ff 0f 0b e8 97 4f c8 ff <0f> 0b e8 90 4f c8 ff 0f 0b e8 b9 41 2d 01 e8 84 4f c8 ff 0f 0b e8 RSP: 0018:ffffc90002497740 EFLAGS: 00010293 RAX: ffffffff816e2c59 RBX: 0000000000000000 RCX: ffff888116ab0000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002497810 R08: ffffffff816e241e R09: 000000000000003b R10: 0000000000000002 R11: 00000000ffffffff R12: 0000000000000000 R13: 0000000000000017 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f0a771d96c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb55463f000 CR3: 00000001177d9000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400