ci2 starts bisection 2023-04-28 06:10:40.550315179 +0000 UTC m=+9159.257633602 bisecting fixing commit since d9b4a0c83a2d405dd85bf32d672686146b9bedff building syzkaller on f08b59ac0d8759f409d594ddca4f08c920e23237 ensuring issue is reproducible on original commit d9b4a0c83a2d405dd85bf32d672686146b9bedff testing commit d9b4a0c83a2d405dd85bf32d672686146b9bedff gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 9f11b24ee637fb2ea9fffd15c16685c9b8227f4fd864f1873e8923b608b413b3 all runs: crashed: WARNING in bpf_xdp_adjust_tail testing current HEAD f48aeeaaa64c628519273f6007a745cf55b68d95 testing commit f48aeeaaa64c628519273f6007a745cf55b68d95 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 7f456106fa0a0a495778b8e14c44b5db730657cbdd4d54a47296116bf72793d7 all runs: crashed: WARNING in bpf_xdp_adjust_tail revisions tested: 2, total time: 32m43.514850201s (build: 25m29.605972858s, test: 6m33.637496773s) the crash still happens on HEAD commit msg: Linux 5.15.109 crash: WARNING in bpf_xdp_adjust_tail ------------[ cut here ]------------ Too BIG xdp->frame_sz = 131072 WARNING: CPU: 1 PID: 3957 at net/core/filter.c:3848 bpf_xdp_adjust_tail+0x135/0x160 net/core/filter.c:3837 Modules linked in: CPU: 1 PID: 3957 Comm: syz-executor.0 Not tainted 5.15.109-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:____bpf_xdp_adjust_tail net/core/filter.c:3848 [inline] RIP: 0010:bpf_xdp_adjust_tail+0x135/0x160 net/core/filter.c:3837 Code: 41 5f 5d c3 80 3d 88 0c 42 05 00 75 e8 c6 05 7f 0c 42 05 01 48 c7 c7 80 2d 76 8a 44 89 f6 e8 02 c6 c8 f9 48 c7 c0 ea ff ff ff <0f> 0b eb c7 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 06 ff ff ff e8 82 RSP: 0018:ffffc90002a0f770 EFLAGS: 00010246 RAX: ffffffffffffffea RBX: ffffc90002a0f920 RCX: 0000000000000201 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffff88806dabfec0 R08: dffffc0000000000 R09: ffffed10173a4f24 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90002a0f928 R13: ffff88806daafeef R14: 0000000000020000 R15: 1ffff92000541f25 FS: 00007f392eef6700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 00000000746e8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bpf_prog_4add87e5301a4105+0x12/0x210 __bpf_prog_run include/linux/filter.h:625 [inline] bpf_prog_run_xdp include/linux/filter.h:800 [inline] bpf_prog_run_generic_xdp+0x4d6/0xec0 net/core/dev.c:4731 netif_receive_generic_xdp net/core/dev.c:4817 [inline] do_xdp_generic+0x331/0x5d0 net/core/dev.c:4872 tun_get_user+0x232d/0x3590 drivers/net/tun.c:1915 tun_chr_write_iter+0xd1/0x190 drivers/net/tun.c:2018 call_write_iter include/linux/fs.h:2103 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x84c/0xb50 fs/read_write.c:594 ksys_write+0x165/0x250 fs/read_write.c:647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f392fb35e7f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 99 fd ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 cc fd ff ff 48 RSP: 002b:00007f392eef6130 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f392fca3f80 RCX: 00007f392fb35e7f RDX: 000000000000fdef RSI: 0000000020000300 RDI: 00000000000000c8 RBP: 00007f392fbdfae9 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000fdef R11: 0000000000000293 R12: 0000000000000000 R13: 00007ffe4b74fc6f R14: 00007f392eef6300 R15: 0000000000022000