ci2 starts bisection 2025-02-25 01:29:32.596787434 +0000 UTC m=+285615.633216216 bisecting fixing commit since 8d23314f588a573519ab88c332e94c927f870810 building syzkaller on c673ca06b23cea94091ab496ef62c3513e434585 ensuring issue is reproducible on original commit 8d23314f588a573519ab88c332e94c927f870810 testing commit 8d23314f588a573519ab88c332e94c927f870810 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: edfbd08d5e0c7f66dc20fea5911b2db365a477f92347665a58c2a14cc58a1dd1 all runs: crashed: general protection fault in current_umask representative crash: general protection fault in current_umask, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 8d23314f588a573519ab88c332e94c927f870810 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0355aba416a155fec344e964c210b387182fb3245a98325269237f5fb722773c all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in current_umask representative crash: BUG: unable to handle kernel NULL pointer dereference in current_umask, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG KASAN], they are not needed kconfig minimization: base=4789 full=6020 leaves diff=243 split chunks (needed=false): <243> split chunk #0 of len 243 into 5 parts testing without sub-chunk 1/5 disabling configs for [HANG LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 8d23314f588a573519ab88c332e94c927f870810 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 0cdf0a203fedd9fcd73c27a96dbd26d6f156c7e71fff677a206c89b565667cff all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in current_umask representative crash: BUG: unable to handle kernel NULL pointer dereference in current_umask, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 8d23314f588a573519ab88c332e94c927f870810 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f821c7eb81853fd917b50dd587a3eb54b256b2f060c34ace7ef111ae393c50c5 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in current_umask representative crash: BUG: unable to handle kernel NULL pointer dereference in current_umask, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 8d23314f588a573519ab88c332e94c927f870810 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: ce4b70a97e4f3ed23c34be63e7f437db5bb5d5ee8a532ce609fcc348ff315f4d all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in current_umask representative crash: BUG: unable to handle kernel NULL pointer dereference in current_umask, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 8d23314f588a573519ab88c332e94c927f870810 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: a3b12e9fccfaeb1e60fac00301c21e9bd090ace7aa02260f399dd4f172352759 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in current_umask representative crash: BUG: unable to handle kernel NULL pointer dereference in current_umask, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 8d23314f588a573519ab88c332e94c927f870810 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 failed building 8d23314f588a573519ab88c332e94c927f870810: net/socket.c:1128: undefined reference to `wext_handle_ioctl' net/socket.c:3397: 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 47 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 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 USB_XHCI_PCI_RENESAS 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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing current HEAD 3f5f2283d6843bde6658e93fc50f5f00e5bd3595 testing commit 3f5f2283d6843bde6658e93fc50f5f00e5bd3595 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: bd26ca3908960b660d7fbbdbf7c1950017951935108364ef9e87977a58532db4 all runs: crashed: BUG: unable to handle kernel NULL pointer dereference in current_umask representative crash: BUG: unable to handle kernel NULL pointer dereference in current_umask, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 2h11m59.513634939s (build: 1h29m36.322026275s, test: 40m26.150533238s) crash still not fixed or there were kernel test errors commit msg: Merge branch 'android13-5.10' into android13-5.10-lts crash: BUG: unable to handle kernel NULL pointer dereference in current_umask EXT4-fs error (device loop0): ext4_lookup:1830: inode #15: comm syz-executor: iget: bad extra_isize 65531 (inode size 512) EXT4-fs error (device loop0): ext4_lookup:1830: inode #15: comm syz-executor: iget: bad extra_isize 65531 (inode size 512) BUG: kernel NULL pointer dereference, address: 000000000000000c #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP CPU: 1 PID: 475 Comm: syz-executor Not tainted 5.10.234-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:current_umask+0x10/0x20 fs/fs_struct.c:158 Code: 00 00 00 88 87 8e 00 00 00 8b 46 0c 89 47 0c 8b 76 48 e8 a3 fa fd ff 5d c3 cc 65 48 8b 04 25 00 ae 01 00 48 8b 80 b0 07 00 00 <8b> 40 0c c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 55 RSP: 0018:ffffc900003efa58 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888110552238 RCX: ffffc900003efac0 RDX: ffffc900003efab8 RSI: 0000000000004000 RDI: ffff888109493780 RBP: ffffc900003efa90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff888109e43334 R12: 0000000000000000 R13: ffff8881105542d8 R14: ffffc900003efac0 R15: ffffc900003efab8 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000000c CR3: 0000000002c0b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: posix_acl_create+0x35/0x40 fs/posix_acl.c:584 ext4_init_acl+0x31/0x160 fs/ext4/acl.c:279 __ext4_new_inode+0x140b/0x1590 fs/ext4/ialloc.c:1323 ext4_mknod+0x103/0x1b0 fs/ext4/namei.c:2858 vfs_mknod+0x1e0/0x2b0 fs/namei.c:3693 vfs_whiteout include/linux/fs.h:1872 [inline] ovl_do_whiteout fs/overlayfs/overlayfs.h:229 [inline] ovl_whiteout fs/overlayfs/dir.c:77 [inline] ovl_cleanup_and_whiteout+0x149/0x180 fs/overlayfs/dir.c:117 ovl_remove_and_whiteout fs/overlayfs/dir.c:795 [inline] ovl_do_remove+0x1cc/0x4f0 fs/overlayfs/dir.c:922 ovl_rmdir+0x11/0x20 fs/overlayfs/dir.c:956 vfs_rmdir.part.0+0x5a/0x170 fs/namei.c:3852 vfs_rmdir+0x33/0x40 fs/namei.c:3838 incfs_kill_sb+0x80/0x90 fs/incfs/vfs.c:1973 deactivate_locked_super+0x31/0xa0 fs/super.c:335 deactivate_super+0x3b/0x50 fs/super.c:366 cleanup_mnt+0x10e/0x160 fs/namespace.c:1118 __cleanup_mnt+0xd/0x10 fs/namespace.c:1125 task_work_run+0x5c/0x90 kernel/task_work.c:189 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x31e/0xa70 kernel/exit.c:863 do_group_exit+0x36/0xa0 kernel/exit.c:985 __do_sys_exit_group kernel/exit.c:996 [inline] __se_sys_exit_group kernel/exit.c:994 [inline] __x64_sys_exit_group+0x13/0x20 kernel/exit.c:994 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f1aace86ef9 Code: Unable to access opcode bytes at RIP 0x7f1aace86ecf. RSP: 002b:00007fffc7a436a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f1aacef9a39 RCX: 00007f1aace86ef9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000075 R08: 00007fffc7a41445 R09: 00007fffc7a44960 R10: 000000000000000b R11: 0000000000000246 R12: 00007fffc7a44960 R13: 00007f1aacef9a14 R14: 000000000000c3c4 R15: 00007fffc7a45a20 Modules linked in: CR2: 000000000000000c ---[ end trace 8d8078bfaad0e19a ]--- RIP: 0010:current_umask+0x10/0x20 fs/fs_struct.c:158 Code: 00 00 00 88 87 8e 00 00 00 8b 46 0c 89 47 0c 8b 76 48 e8 a3 fa fd ff 5d c3 cc 65 48 8b 04 25 00 ae 01 00 48 8b 80 b0 07 00 00 <8b> 40 0c c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 55 48 89 e5 41 55 RSP: 0018:ffffc900003efa58 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888110552238 RCX: ffffc900003efac0 RDX: ffffc900003efab8 RSI: 0000000000004000 RDI: ffff888109493780 RBP: ffffc900003efa90 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff888109e43334 R12: 0000000000000000 R13: ffff8881105542d8 R14: ffffc900003efac0 R15: ffffc900003efab8 FS: 0000000000000000(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000000000c CR3: 0000000002c0b000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 88 87 8e 00 00 add %cl,0x8e87(%rax) 8: 00 8b 46 0c 89 47 add %cl,0x47890c46(%rbx) e: 0c 8b or $0x8b,%al 10: 76 48 jbe 0x5a 12: e8 a3 fa fd ff call 0xfffdfaba 17: 5d pop %rbp 18: c3 ret 19: cc int3 1a: 65 48 8b 04 25 00 ae mov %gs:0x1ae00,%rax 21: 01 00 23: 48 8b 80 b0 07 00 00 mov 0x7b0(%rax),%rax * 2a: 8b 40 0c mov 0xc(%rax),%eax <-- trapping instruction 2d: c3 ret 2e: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 35: 00 00 00 00 39: 90 nop 3a: 55 push %rbp 3b: 48 89 e5 mov %rsp,%rbp 3e: 41 55 push %r13