ci starts bisection 2023-05-06 19:54:39.598405412 +0000 UTC m=+53509.860057238 bisecting fixing commit since bed5a942e27e1df67250e27e1f2eb5ea2d4cc362 building syzkaller on 3fd2ea69e05557e7e0fef9b68263b4150670671c ensuring issue is reproducible on original commit bed5a942e27e1df67250e27e1f2eb5ea2d4cc362 testing commit bed5a942e27e1df67250e27e1f2eb5ea2d4cc362 gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 7439e05548baf872c6f84eb3faf0f465981e9a987b9bd8e318419170e0404fa3 all runs: crashed: general protection fault in scatterwalk_copychunks testing current HEAD ed23734c23d2fc1e6a1ff80f8c2b82faeed0ed0c testing commit ed23734c23d2fc1e6a1ff80f8c2b82faeed0ed0c gcc compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 666b7043124fcea4022120413d4a748e19082e80ab9bf7d015497fbe86b5a14a run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: failed to write control pipe: write |NUM: broken pipe run #1: crashed: general protection fault in scatterwalk_copychunks run #2: crashed: general protection fault in scatterwalk_copychunks run #3: crashed: general protection fault in scatterwalk_copychunks run #4: crashed: general protection fault in scatterwalk_copychunks run #5: crashed: general protection fault in scatterwalk_copychunks run #6: crashed: general protection fault in scatterwalk_copychunks run #7: crashed: general protection fault in scatterwalk_copychunks run #8: crashed: general protection fault in scatterwalk_copychunks run #9: crashed: general protection fault in scatterwalk_copychunks crash still not fixed/happens on the oldest tested release revisions tested: 2, total time: 22m59.369398871s (build: 14m58.621370962s, test: 6m52.497664106s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge tag 'net-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net crash: general protection fault in scatterwalk_copychunks wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 1 PID: 956 Comm: kworker/u4:4 Not tainted 6.3.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 Workqueue: pencrypt_parallel padata_parallel_worker RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:63 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:83 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:72 [inline] RIP: 0010:scatterwalk_copychunks+0x2bd/0x570 crypto/scatterwalk.c:50 Code: ff ff 4c 89 ff e8 13 0a 2e 00 49 89 c7 48 8b 44 24 10 80 38 00 0f 85 30 02 00 00 49 8d 77 08 4d 89 7d 00 48 89 f0 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e f9 01 00 00 48 8b 54 24 08 RSP: 0018:ffffc900052676d8 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 1ffff1100fc72c4b RSI: 0000000000000008 RDI: ffff88807e396258 RBP: ffff88802778d690 R08: 0000000000000001 R09: ffffffff8f5cdb5f R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: ffffc900052678d0 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000052fab0 CR3: 000000002769c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skcipher_next_slow crypto/skcipher.c:296 [inline] skcipher_walk_next+0x620/0x1760 crypto/skcipher.c:381 skcipher_walk_aead_common+0x7e6/0xc40 crypto/skcipher.c:557 gcmaes_crypt_by_sg+0x27e/0x600 arch/x86/crypto/aesni-intel_glue.c:725 gcmaes_encrypt+0xcd/0x200 arch/x86/crypto/aesni-intel_glue.c:789 generic_gcmaes_encrypt+0x12c/0x190 arch/x86/crypto/aesni-intel_glue.c:1170 pcrypt_aead_enc+0x15/0x70 crypto/pcrypt.c:83 padata_parallel_worker+0x5a/0xa0 kernel/padata.c:152 process_one_work+0x86e/0x1410 kernel/workqueue.c:2405 worker_thread+0x5af/0xf00 kernel/workqueue.c:2552 kthread+0x2ea/0x3c0 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:scatterwalk_start include/crypto/scatterwalk.h:63 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:83 [inline] RIP: 0010:scatterwalk_pagedone include/crypto/scatterwalk.h:72 [inline] RIP: 0010:scatterwalk_copychunks+0x2bd/0x570 crypto/scatterwalk.c:50 Code: ff ff 4c 89 ff e8 13 0a 2e 00 49 89 c7 48 8b 44 24 10 80 38 00 0f 85 30 02 00 00 49 8d 77 08 4d 89 7d 00 48 89 f0 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e f9 01 00 00 48 8b 54 24 08 RSP: 0018:ffffc900052676d8 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 1ffff1100fc72c4b RSI: 0000000000000008 RDI: ffff88807e396258 RBP: ffff88802778d690 R08: 0000000000000001 R09: ffffffff8f5cdb5f R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001 R13: ffffc900052678d0 R14: dffffc0000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000052fab0 CR3: 000000002769c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff 4c 89 ff decl -0x1(%rcx,%rcx,4) 4: e8 13 0a 2e 00 callq 0x2e0a1c 9: 49 89 c7 mov %rax,%r15 c: 48 8b 44 24 10 mov 0x10(%rsp),%rax 11: 80 38 00 cmpb $0x0,(%rax) 14: 0f 85 30 02 00 00 jne 0x24a 1a: 49 8d 77 08 lea 0x8(%r15),%rsi 1e: 4d 89 7d 00 mov %r15,0x0(%r13) 22: 48 89 f0 mov %rsi,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e f9 01 00 00 jle 0x233 3a: 48 8b 54 24 08 mov 0x8(%rsp),%rdx