ci2 starts bisection 2025-04-20 01:48:55.710603152 +0000 UTC m=+188582.872330217 bisecting fixing commit since 401a2769d99066952f3bfb73a8ce6b0269bc04d7 building syzkaller on fb427a0782000106c62de76d251e5a02de5406a9 ensuring issue is reproducible on original commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 1f9ace3852c09aa0b00d55fbd405099e57eca19cb43d716399199395e772a66e all runs: crashed: UBSAN: shift-out-of-bounds in ext4_handle_clustersize representative crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize, types: [UBSAN] check whether we can drop unnecessary instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: fc3abeffa7f8efcad96429b2530aae7236a2b8fee2cc2fbddd8f608511478590 all runs: crashed: UBSAN: shift-out-of-bounds in ext4_handle_clustersize representative crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize, types: [UBSAN] the bug reproduces without the instrumentation disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=5178 full=6490 leaves diff=255 split chunks (needed=false): <255> split chunk #0 of len 255 into 5 parts testing without sub-chunk 1/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 8413c0e2484663241ac4f7f914c255067886354994991a798da46ce6c7717ee0 all runs: crashed: UBSAN: shift-out-of-bounds in ext4_handle_clustersize representative crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize, types: [UBSAN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 42ba430c5955d8688be00d6fb946733acd2ad42e4112c1e40e3242670799f6f0 all runs: crashed: UBSAN: shift-out-of-bounds in ext4_handle_clustersize representative crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize, types: [UBSAN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [HANG LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: b642925f365668d29bb8078adbafc61645aa292d865d0551557cbdc975c61b65 all runs: crashed: UBSAN: shift-out-of-bounds in ext4_handle_clustersize representative crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize, types: [UBSAN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [HANG LEAK BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: 0c68b221a0ff290f1ff9bccc484f1101901a77e8ce572c9b0dc605589315e240 all runs: crashed: UBSAN: shift-out-of-bounds in ext4_handle_clustersize representative crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize, types: [UBSAN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK BUG], they are not needed testing commit 401a2769d99066952f3bfb73a8ce6b0269bc04d7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 failed building 401a2769d99066952f3bfb73a8ce6b0269bc04d7: ld.lld: error: undefined symbol: wext_handle_ioctl ld.lld: error: undefined symbol: compat_wext_handle_ioctl ld.lld: error: undefined symbol: wext_proc_init ld.lld: error: undefined symbol: wext_proc_exit minimized to 51 configs; suspects: [HID_ZEROPLUS 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_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 [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing current HEAD bc3d1d352ab6d8c00b9d6e030386b45c5a63dac7 testing commit bc3d1d352ab6d8c00b9d6e030386b45c5a63dac7 gcc compiler: Debian clang version 15.0.6, Debian LLD 15.0.6 kernel signature: bb8733386bf54a080eabd5b3fa168632154597172eab69d0761e6fe89a59c88b all runs: crashed: UBSAN: shift-out-of-bounds in ext4_handle_clustersize representative crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize, types: [UBSAN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 48m25.230266711s (build: 18m47.089274705s, test: 24m38.632345958s) crash still not fixed or there were kernel test errors commit msg: ANDROID: GKI: update symbol list for xiaomi crash: UBSAN: shift-out-of-bounds in ext4_handle_clustersize loop0: detected capacity change from 0 to 512 ================================================================================ UBSAN: shift-out-of-bounds in fs/ext4/super.c:4340:27 shift exponent 59 is too large for 32-bit type 'int' CPU: 0 PID: 403 Comm: syz-executor.0 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x68/0x91 lib/dump_stack.c:106 dump_stack+0x10/0x16 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_shift_out_of_bounds+0x261/0x290 lib/ubsan.c:321 ext4_handle_clustersize+0x17e/0x190 fs/ext4/super.c:4340 __ext4_fill_super fs/ext4/super.c:5201 [inline] ext4_fill_super+0x1296/0x2050 fs/ext4/super.c:5641 get_tree_bdev+0x1c6/0x260 fs/super.c:1368 ext4_get_tree+0x10/0x20 fs/ext4/super.c:5671 vfs_get_tree+0x1e/0x80 fs/super.c:1575 do_new_mount+0x149/0x360 fs/namespace.c:3056 path_mount+0x31c/0x550 fs/namespace.c:3386 do_mount fs/namespace.c:3399 [inline] __do_sys_mount fs/namespace.c:3607 [inline] __se_sys_mount+0x143/0x1b0 fs/namespace.c:3584 __x64_sys_mount+0x20/0x30 fs/namespace.c:3584 x64_sys_call+0x49d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0f61a7e3ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f0f6283bee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f0f6283bf80 RCX: 00007f0f61a7e3ea RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007f0f6283bf40 RBP: 0000000020000040 R08: 00007f0f6283bf80 R09: 0000000000004500 R10: 0000000000004500 R11: 0000000000000246 R12: 0000000020000080 R13: 00007f0f6283bf40 R14: 00000000000004dc R15: 00000000200000c0 ================================================================================ EXT4-fs (loop0): fragment/cluster size (0) != block size (4096)