ci2 starts bisection 2024-03-10 15:27:02.648949063 +0000 UTC m=+124513.652776686 bisecting fixing commit since 1b639e97b8fc9a60089ded544e103753a0a542a2 building syzkaller on cb976f63e0177b96eb9ce1c631cc5e2c4b4b0759 ensuring issue is reproducible on original commit 1b639e97b8fc9a60089ded544e103753a0a542a2 testing commit 1b639e97b8fc9a60089ded544e103753a0a542a2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: f1c16ee2bbd0fe57fbfa4feb241c44b06110eb94d342778a48d7104264dbb9cf run #0: crashed: general protection fault in hrtimer_try_to_cancel run #1: crashed: general protection fault in hrtimer_try_to_cancel run #2: crashed: general protection fault in hrtimer_try_to_cancel run #3: crashed: general protection fault in hrtimer_try_to_cancel run #4: crashed: general protection fault in hrtimer_try_to_cancel run #5: crashed: general protection fault in hrtimer_try_to_cancel run #6: crashed: general protection fault in hrtimer_try_to_cancel run #7: crashed: general protection fault in hrtimer_try_to_cancel run #8: crashed: general protection fault in hrtimer_try_to_cancel run #9: crashed: general protection fault in hrtimer_try_to_cancel run #10: crashed: general protection fault in hrtimer_try_to_cancel run #11: crashed: general protection fault in hrtimer_try_to_cancel run #12: crashed: general protection fault in hrtimer_try_to_cancel run #13: crashed: general protection fault in hrtimer_try_to_cancel run #14: crashed: general protection fault in hrtimer_try_to_cancel run #15: crashed: general protection fault in hrtimer_try_to_cancel run #16: crashed: no output from test machine run #17: crashed: no output from test machine run #18: crashed: no output from test machine run #19: crashed: no output from test machine representative crash: general protection fault in hrtimer_try_to_cancel, types: [UNKNOWN] check whether we can drop unnecessary instrumentation disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 1b639e97b8fc9a60089ded544e103753a0a542a2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 569e097f903cd16268cb8acfd73aba9826e7d5b058085bf365501330b12e89a7 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #5: crashed: no output from test machine run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel, types: [UNKNOWN] the bug reproduces without the instrumentation disabling configs for [UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=5179 full=6485 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 BUG KASAN LOCKDEP ATOMIC_SLEEP], they are not needed testing commit 1b639e97b8fc9a60089ded544e103753a0a542a2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: e306a355369f4bbdd9593c9dcbd61f95074cba68661ca133f1e09155b3494eb0 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 1b639e97b8fc9a60089ded544e103753a0a542a2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: eea844a24332dcf02945b815c5e56a1182b12bc5cd09ad82dd559c8fb53d6606 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN BUG], they are not needed testing commit 1b639e97b8fc9a60089ded544e103753a0a542a2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 6c8a6a9eb8252302b4db30e587d6e49d84515efcd819e44385cc9a445a76ca04 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #6: crashed: no output from test machine run #7: crashed: no output from test machine run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel, 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 1b639e97b8fc9a60089ded544e103753a0a542a2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 89c45284c0489545e8d04c0a973c7308c329d0d8141bf8182d057b38650f6fd0 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #8: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "-v" "/tmp/syz-executor4092763577" "root@10.128.10.19:./syz-executor4092763577"]: exit status 255 Executing: program /usr/bin/ssh host 10.128.10.19, user root, command sftp OpenSSH_9.2p1 Debian-2+deb12u1, OpenSSL 3.0.11 19 Sep 2023 debug1: Reading configuration data /dev/null debug1: Connecting to 10.128.10.19 [10.128.10.19] port 22. debug1: fd 3 clearing O_NONBLOCK debug1: Connection established. debug1: identity file /root/.ssh/id_rsa type -1 debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ecdsa_sk type -1 debug1: identity file /root/.ssh/id_ecdsa_sk-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type -1 debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: identity file /root/.ssh/id_ed25519_sk type -1 debug1: identity file /root/.ssh/id_ed25519_sk-cert type -1 debug1: identity file /root/.ssh/id_xmss type -1 debug1: identity file /root/.ssh/id_xmss-cert type -1 debug1: identity file /root/.ssh/id_dsa type -1 debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_9.2p1 Debian-2+deb12u1 Connection timed out during banner exchange Connection to 10.128.10.19 port 22 timed out scp: Connection closed run #9: crashed: no output from test machine representative crash: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel, types: [UNKNOWN] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [LEAK UBSAN BUG KASAN LOCKDEP ATOMIC_SLEEP HANG], they are not needed testing commit 1b639e97b8fc9a60089ded544e103753a0a542a2 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 failed building 1b639e97b8fc9a60089ded544e103753a0a542a2: net/socket.c:1225: undefined reference to `wext_handle_ioctl' net/socket.c:3420: undefined reference to `compat_wext_handle_ioctl' net/core/net-procfs.c:329: undefined reference to `wext_proc_init' net/core/net-procfs.c:345: undefined reference to `wext_proc_exit' minimized to 50 configs; suspects: [HID_ZEROPLUS USB_NET_CDC_MBIM USB_NET_CDC_SUBSET USB_NET_CDC_SUBSET_ENABLE 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 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 UBSAN], they are not needed testing current HEAD 5f66e7c904ee8949930032da9471936366e6dd23 testing commit 5f66e7c904ee8949930032da9471936366e6dd23 gcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 47e8ed2b9b8025aa2e2267dbb89a767779509ae9a1d1313fad0e25e5365742a5 run #0: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #1: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #2: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #3: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #4: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #5: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #6: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #7: crashed: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel run #8: crashed: no output from test machine run #9: crashed: no output from test machine representative crash: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel, types: [UNKNOWN] crash still not fixed/happens on the oldest tested release revisions tested: 7, total time: 1h27m45.143688059s (build: 19m46.627051646s, test: 1h5m19.922134511s) crash still not fixed or there were kernel test errors commit msg: ANDROID: Update the ABI symbol list crash: BUG: unable to handle kernel NULL pointer dereference in hrtimer_try_to_cancel netlink: 'syz-executor.0': attribute type 27 has an invalid length. bridge0: port 2(bridge_slave_1) entered disabled state bridge0: port 1(bridge_slave_0) entered disabled state BUG: kernel NULL pointer dereference, address: 0000000000000010 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 10fb88067 P4D 10fb88067 PUD 10cf66067 PMD 0 Oops: 0000 [#1] PREEMPT SMP CPU: 0 PID: 358 Comm: syz-executor.0 Not tainted 6.1.68-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:274 [inline] RIP: 0010:hrtimer_active kernel/time/hrtimer.c:1611 [inline] RIP: 0010:hrtimer_try_to_cancel+0x12/0xb0 kernel/time/hrtimer.c:1328 Code: 00 e8 52 30 01 00 5b 41 5e 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 57 41 56 41 54 53 48 89 fb 48 8b 43 30 <8b> 48 10 f6 c1 01 74 04 f3 90 eb f4 80 7b 38 00 75 25 48 39 58 18 RSP: 0018:ffffc900007972f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888111a80918 RCX: 0000000000000004 RDX: 000000000000000d RSI: 000061100fc019e9 RDI: ffff888111a80918 RBP: ffffc90000797318 R08: 0000000000000000 R09: ffffc900003a5000 R10: 0000000000000001 R11: ffffc900007975c0 R12: ffff888111a80800 R13: 000061100fc019e9 R14: ffff888111a6b000 R15: 0000000000000340 FS: 00007f75075b56c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 0000000112eb6000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hrtimer_cancel+0xd/0x20 kernel/time/hrtimer.c:1443 napi_disable+0x54/0x60 net/core/dev.c:6466 veth_napi_del_range drivers/net/veth.c:1041 [inline] veth_napi_del drivers/net/veth.c:1056 [inline] veth_set_features+0x79/0xe0 drivers/net/veth.c:1484 __netdev_update_features+0x2a3/0x700 net/core/dev.c:9762 netdev_update_features+0x20/0x90 net/core/dev.c:9836 veth_xdp_set drivers/net/veth.c:1580 [inline] veth_xdp+0x1ab/0x1e0 drivers/net/veth.c:1593 dev_xdp_install+0x65/0xf0 net/core/dev.c:9156 dev_xdp_attach+0x3c6/0x500 net/core/dev.c:9304 dev_change_xdp_fd+0xd3/0x110 net/core/dev.c:9550 do_setlink+0x1102/0x1170 net/core/rtnetlink.c:3022 rtnl_group_changelink net/core/rtnetlink.c:3329 [inline] __rtnl_newlink net/core/rtnetlink.c:3586 [inline] rtnl_newlink+0x8df/0xdd0 net/core/rtnetlink.c:3623 rtnetlink_rcv_msg+0x2a6/0x460 net/core/rtnetlink.c:6122 netlink_rcv_skb+0xf4/0x120 net/netlink/af_netlink.c:2518 rtnetlink_rcv+0x10/0x20 net/core/rtnetlink.c:6140 netlink_unicast_kernel net/netlink/af_netlink.c:1327 [inline] netlink_unicast+0x291/0x380 net/netlink/af_netlink.c:1353 netlink_sendmsg+0x38b/0x420 net/netlink/af_netlink.c:1875 sock_sendmsg_nosec net/socket.c:716 [inline] __sock_sendmsg net/socket.c:728 [inline] ____sys_sendmsg+0x181/0x220 net/socket.c:2499 ___sys_sendmsg+0x28f/0x2d0 net/socket.c:2553 __sys_sendmsg net/socket.c:2582 [inline] __do_sys_sendmsg net/socket.c:2591 [inline] __se_sys_sendmsg+0xf5/0x130 net/socket.c:2589 __x64_sys_sendmsg+0x18/0x20 net/socket.c:2589 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f750687cae9 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:00007f75075b50c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f750699c050 RCX: 00007f750687cae9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000005 RBP: 00007f75068c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f750699c050 R15: 00007fffe581daa8 Modules linked in: CR2: 0000000000000010 ---[ end trace 0000000000000000 ]--- RIP: 0010:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:274 [inline] RIP: 0010:hrtimer_active kernel/time/hrtimer.c:1611 [inline] RIP: 0010:hrtimer_try_to_cancel+0x12/0xb0 kernel/time/hrtimer.c:1328 Code: 00 e8 52 30 01 00 5b 41 5e 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 57 41 56 41 54 53 48 89 fb 48 8b 43 30 <8b> 48 10 f6 c1 01 74 04 f3 90 eb f4 80 7b 38 00 75 25 48 39 58 18 RSP: 0018:ffffc900007972f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888111a80918 RCX: 0000000000000004 RDX: 000000000000000d RSI: 000061100fc019e9 RDI: ffff888111a80918 RBP: ffffc90000797318 R08: 0000000000000000 R09: ffffc900003a5000 R10: 0000000000000001 R11: ffffc900007975c0 R12: ffff888111a80800 R13: 000061100fc019e9 R14: ffff888111a6b000 R15: 0000000000000340 FS: 00007f75075b56c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000010 CR3: 0000000112eb6000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 00 e8 add %ch,%al 2: 52 push %rdx 3: 30 01 xor %al,(%rcx) 5: 00 5b 41 add %bl,0x41(%rbx) 8: 5e pop %rsi 9: 5d pop %rbp a: c3 ret b: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 12: 00 00 00 15: 0f 1f 00 nopl (%rax) 18: 55 push %rbp 19: 48 89 e5 mov %rsp,%rbp 1c: 41 57 push %r15 1e: 41 56 push %r14 20: 41 54 push %r12 22: 53 push %rbx 23: 48 89 fb mov %rdi,%rbx 26: 48 8b 43 30 mov 0x30(%rbx),%rax * 2a: 8b 48 10 mov 0x10(%rax),%ecx <-- trapping instruction 2d: f6 c1 01 test $0x1,%cl 30: 74 04 je 0x36 32: f3 90 pause 34: eb f4 jmp 0x2a 36: 80 7b 38 00 cmpb $0x0,0x38(%rbx) 3a: 75 25 jne 0x61 3c: 48 39 58 18 cmp %rbx,0x18(%rax)