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verifier backtracking bug
WARNING: CPU: 1 PID: 10895 at kernel/bpf/verifier.c:1782 __mark_chain_precision+0x197a/0x1ea0 kernel/bpf/verifier.c:1782
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 10895 Comm: syz-executor205 Not tainted 5.3.0-rc3+ #95
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2dc/0x755 kernel/panic.c:219
 __warn.cold+0x20/0x4c kernel/panic.c:576
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028
RIP: 0010:__mark_chain_precision+0x197a/0x1ea0 kernel/bpf/verifier.c:1782
Code: 08 31 ff 89 de e8 26 a0 f2 ff 84 db 0f 85 07 ff ff ff e8 d9 9e f2 ff 48 c7 c7 80 a7 91 87 c6 05 2c b2 21 08 01 e8 9e 11 c4 ff <0f> 0b 41 bc f2 ff ff ff e9 e8 fe ff ff 48 8b bd d8 fe ff ff e8 fd
RSP: 0018:ffff888099dc75d8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815c3ba6 RDI: ffffed10133b8ead
RBP: ffff888099dc7728 R08: ffff888089dee080 R09: fffffbfff11b42c5
R10: fffffbfff11b42c4 R11: ffffffff88da1623 R12: 0000000000000001
R13: ffff888099d9abc0 R14: ffff88808b3d90c0 R15: ffff888099dc76c0
 mark_chain_precision kernel/bpf/verifier.c:1819 [inline]
 propagate_precision kernel/bpf/verifier.c:7176 [inline]
 is_state_visited kernel/bpf/verifier.c:7297 [inline]
 do_check+0x36d6/0x89f0 kernel/bpf/verifier.c:7509
 bpf_check+0x6f99/0x9948 kernel/bpf/verifier.c:9292
 bpf_prog_load+0xe68/0x1670 kernel/bpf/syscall.c:1698
 __do_sys_bpf+0xc43/0x3460 kernel/bpf/syscall.c:2849
 __se_sys_bpf kernel/bpf/syscall.c:2808 [inline]
 __x64_sys_bpf+0x73/0xb0 kernel/bpf/syscall.c:2808
 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4402b9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff4a9ec188 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004402b9
RDX: 0000000000000048 RSI: 0000000020000200 RDI: 0000000000000005
RBP: 00000000006ca018 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000401b40
R13: 0000000000401bd0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..