ci2 starts bisection 2023-12-12 06:08:20.197221749 +0000 UTC m=+369257.303143079 bisecting fixing commit since 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 building syzkaller on de870ca5ea0b42afdf670fa407254dc617342cc3 ensuring issue is reproducible on original commit 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 testing commit 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5bb0751b5224f012416bfb95769ccc865d711a0a93f2118112b1e4422592c2ce all runs: crashed: kernel BUG in ext4_mb_load_buddy_gfp representative crash: kernel BUG in ext4_mb_load_buddy_gfp, types: [BUG] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c72336d24522d25830df2ff1119d8715f9d86a8655b704d7c5ec99e076e03166 all runs: crashed: kernel BUG in ext4_mb_load_buddy_gfp representative crash: kernel BUG in ext4_mb_load_buddy_gfp, 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=4789 full=6024 leaves diff=237 split chunks (needed=false): <237> split chunk #0 of len 237 into 5 parts testing without sub-chunk 1/5 disabling configs for [LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: de5905b9190ba5e818dc703b874e3b5f63d461065697860c35067210894cfff3 all runs: crashed: kernel BUG in ext4_mb_load_buddy_gfp representative crash: kernel BUG in ext4_mb_load_buddy_gfp, types: [BUG] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 67e3d3a7e93c2753e1b1390aaf6e21f792a88fef7ba47badf66661d99f4efd0e all runs: crashed: kernel BUG in ext4_mb_load_buddy_gfp representative crash: kernel BUG in ext4_mb_load_buddy_gfp, types: [BUG] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK UBSAN KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 3c25c12f74ec97fa055da50fa8dffbf3aee9d0bf42c12b4d52c33a4d78ee6ba5 all runs: crashed: kernel BUG in ext4_mb_load_buddy_gfp representative crash: kernel BUG in ext4_mb_load_buddy_gfp, types: [BUG] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 436ffc4ab67d1e1b4b4483cbf5c2dc72a80f66c362beefd346580e8959751c3f all runs: crashed: kernel BUG in ext4_mb_load_buddy_gfp representative crash: kernel BUG in ext4_mb_load_buddy_gfp, 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 3ad342cf5b2cadf6408597d0cf086c31ab7ef383 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 3ad342cf5b2cadf6408597d0cf086c31ab7ef383: net/socket.c:1109: undefined reference to `wext_handle_ioctl' net/socket.c:3378: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:346: undefined reference to `wext_proc_exit' net/core/net-procfs.c:330: undefined reference to `wext_proc_init' minimized to 45 configs; suspects: [HID_ZEROPLUS 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 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 X86_X32 ZEROPLUS_FF] disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing current HEAD 38968376776141850596561821e8c3fa30fe9fdb testing commit 38968376776141850596561821e8c3fa30fe9fdb gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: c762273bb47bff46026baa1cf5f560978964c33932fa077ff66d9e553231eaad run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in ext4_mb_new_blocks run #1: crashed: kernel BUG in ext4_mb_release_inode_pa run #2: crashed: kernel BUG in ext4_mb_release_inode_pa run #3: crashed: kernel BUG in ext4_mb_release_inode_pa run #4: OK run #5: OK run #6: OK run #7: OK run #8: OK run #9: OK representative crash: kernel BUG in ext4_mb_release_inode_pa, types: [BUG UNKNOWN] crash still not fixed/happens on the oldest tested release reproducer is flaky (1.00 repro chance estimate) revisions tested: 7, total time: 55m0.490204669s (build: 12m40.226893369s, test: 40m52.652685324s) crash still not fixed or there were kernel test errors commit msg: UPSTREAM: interconnect: qcom: Add support for mask-based BCMs crash: kernel BUG in ext4_mb_release_inode_pa ------------[ cut here ]------------ kernel BUG at fs/ext4/mballoc.c:4298! invalid opcode: 0000 [#1] PREEMPT SMP CPU: 1 PID: 18579 Comm: syz-executor.0 Not tainted 5.10.201-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:ext4_mb_release_inode_pa.isra.0+0x29e/0x2b0 fs/ext4/mballoc.c:4298 Code: b0 e8 26 0f 03 00 48 83 c4 20 e9 be fe ff ff e8 3f 04 be ff eb 89 e8 38 04 be ff e9 2d ff ff ff 0f 0b 85 db 0f 84 ef fd ff ff <0f> 0b e8 6b b1 95 00 66 66 2e 0f 1f 84 00 00 00 00 00 55 41 89 d2 RSP: 0018:ffffc90004bfaf10 EFLAGS: 00010202 RAX: 0000000000003b3a RBX: 0000000000000016 RCX: 0000000000000004 RDX: 000000000003b3a0 RSI: 00000000fffff01a RDI: ffffc90004bfaf30 RBP: ffffc90004bfaf68 R08: ffffc90004bfaf34 R09: 0000000000040000 R10: 0000000000000000 R11: 0000000000000009 R12: ffff888109e8c138 R13: ffff8881108bba90 R14: ffff8881108bba90 R15: dead000000000100 FS: 00007effed6b46c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000001ffffec0 CR3: 000000011492b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ext4_mb_discard_group_preallocations+0x31b/0x410 fs/ext4/mballoc.c:4444 ext4_mb_discard_preallocations fs/ext4/mballoc.c:5010 [inline] ext4_mb_discard_preallocations_should_retry fs/ext4/mballoc.c:5031 [inline] ext4_mb_new_blocks+0xe2c/0x1020 fs/ext4/mballoc.c:5169 ext4_new_meta_blocks+0xbc/0x100 fs/ext4/balloc.c:732 ext4_ext_grow_indepth fs/ext4/extents.c:1320 [inline] ext4_ext_create_new_leaf fs/ext4/extents.c:1424 [inline] ext4_ext_insert_extent+0x5b4/0x1530 fs/ext4/extents.c:2094 ext4_ext_map_blocks+0x581/0x19a0 fs/ext4/extents.c:4302 ext4_map_blocks+0x19a/0x5b0 fs/ext4/inode.c:646 _ext4_get_block+0x8e/0x110 fs/ext4/inode.c:793 ext4_get_block+0x11/0x20 fs/ext4/inode.c:810 ext4_block_write_begin+0x178/0x510 fs/ext4/inode.c:1077 ext4_write_begin+0x1f5/0x6d0 fs/ext4/inode.c:1219 ext4_da_write_begin+0x234/0x580 fs/ext4/inode.c:3021 generic_perform_write+0xbe/0x1b0 mm/filemap.c:3509 ext4_buffered_write_iter+0x9f/0x150 fs/ext4/file.c:271 ext4_file_write_iter+0x5b/0x840 fs/ext4/file.c:685 __kernel_write+0x13e/0x2c0 fs/read_write.c:550 dump_emit+0x79/0xa0 fs/coredump.c:849 dump_user_range+0x60/0x100 fs/coredump.c:902 elf_core_dump+0xdf1/0xee0 fs/binfmt_elf.c:2287 do_coredump+0xcd3/0x1090 fs/coredump.c:811 get_signal+0x489/0x8a0 kernel/signal.c:2768 arch_do_signal_or_restart+0xeb/0x7d0 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop kernel/entry/common.c:169 [inline] exit_to_user_mode_prepare+0xd1/0x120 kernel/entry/common.c:199 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:287 irqentry_exit+0x3c/0x60 kernel/entry/common.c:375 exc_page_fault+0x27f/0x5b0 arch/x86/mm/fault.c:1521 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571 RIP: 0033:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 002b:0000000020000473 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 0000000000000058 RCX: 00007effedb31959 RDX: 00007effed6b3fb0 RSI: 0000000000000058 RDI: 00007effed6b3fb0 RBP: 00007effedb8dc88 R08: 0000000000000000 R09: 0000000000000058 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007effedc50f80 R15: 00007ffca879a298 Modules linked in: ---[ end trace 480167fc99953f55 ]--- RIP: 0010:ext4_mb_release_inode_pa.isra.0+0x29e/0x2b0 fs/ext4/mballoc.c:4298 Code: b0 e8 26 0f 03 00 48 83 c4 20 e9 be fe ff ff e8 3f 04 be ff eb 89 e8 38 04 be ff e9 2d ff ff ff 0f 0b 85 db 0f 84 ef fd ff ff <0f> 0b e8 6b b1 95 00 66 66 2e 0f 1f 84 00 00 00 00 00 55 41 89 d2 RSP: 0018:ffffc90004bfaf10 EFLAGS: 00010202 RAX: 0000000000003b3a RBX: 0000000000000016 RCX: 0000000000000004 RDX: 000000000003b3a0 RSI: 00000000fffff01a RDI: ffffc90004bfaf30 RBP: ffffc90004bfaf68 R08: ffffc90004bfaf34 R09: 0000000000040000 R10: 0000000000000000 R11: 0000000000000009 R12: ffff888109e8c138 R13: ffff8881108bba90 R14: ffff8881108bba90 R15: dead000000000100 FS: 00007effed6b46c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000001ffffec0 CR3: 000000011492b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400