ci starts bisection 2024-01-20 08:30:34.450103377 +0000 UTC m=+19771.756702867 bisecting fixing commit since 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e building syzkaller on 03d9c195daed8fca30b642783f35657aa7e32209 ensuring issue is reproducible on original commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 28fcfaf9237249c85675b0c421b63e5970535021b33cd2abaa1227ba663cf91c all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] check whether we can drop unnecessary instrumentation disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 82a6a9a990313850f3dbd0c43d1b4e87fd14fbabc43129c0c42a0fa575bd3b8a all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] the bug reproduces without the instrumentation disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed kconfig minimization: base=3917 full=7643 leaves diff=1999 split chunks (needed=false): <1999> split chunk #0 of len 1999 into 5 parts testing without sub-chunk 1/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 88589f8453dd25dcf70d8a90c725caf222509b71d66816900e6fabef066f4acb all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] the chunk can be dropped testing without sub-chunk 2/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4549a155b2e027eb8e1bb793d4527f81192b5e60bd0fbe00ce573b69b117237c all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] the chunk can be dropped testing without sub-chunk 3/5 disabling configs for [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 5df31b49dcc2ce5f13de682f254e5f59af1d15b1f6191956aae939ca372305b2 all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] the chunk can be dropped testing without sub-chunk 4/5 disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 87c83e7b384338890bd44bca2a9831a308e47f35b30b2fc11dc8e304de14d07b all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] the chunk can be dropped testing without sub-chunk 5/5 disabling configs for [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 4379ffdf5dca769fd53f6ab9fd34ca16bdd6dc78026ace850e7e27b415bac45f all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] the chunk can be dropped disabling configs for [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed testing current HEAD 9d64bf433c53cab2f48a3fff7a1f2a696bc5229a testing commit 9d64bf433c53cab2f48a3fff7a1f2a696bc5229a gcc compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 kernel signature: 82f6162c41bb814399b1897e16b29e75e79aa2ea1e82a2ec5d1a71133c151a6e all runs: crashed: WARNING in blk_rq_map_user_iov representative crash: WARNING in blk_rq_map_user_iov, types: [WARNING] crash still not fixed/happens on the oldest tested release revisions tested: 8, total time: 2h43m36.855031227s (build: 1h41m43.097179536s, test: 50m15.859479267s) crash still not fixed or there were kernel test errors commit msg: Merge tag 'perf-tools-for-v6.8-1-2024-01-09' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools crash: WARNING in blk_rq_map_user_iov ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1849 at lib/iov_iter.c:274 _copy_from_iter+0xeb/0x4f0 lib/iov_iter.c:274 Modules linked in: CPU: 0 PID: 1849 Comm: syz-executor.0 Not tainted 6.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:_copy_from_iter+0xeb/0x4f0 lib/iov_iter.c:274 Code: 01 f0 0f 92 c2 48 85 c0 78 aa 48 85 d2 75 a5 0f 01 cb 48 8b 3c 24 48 89 d9 e8 81 6d 5d 00 0f 01 ca 49 89 df 49 29 cf eb 91 90 <0f> 0b 90 45 31 ff eb 9d 48 8b 44 24 50 65 48 2b 04 25 28 00 00 00 RSP: 0018:ffffc90000f677f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffea000409c800 RCX: ffffc90000f67801 RDX: ffffc90000f678f8 RSI: 0000000000001000 RDI: ffff888102720000 RBP: 0000000000000000 R08: 0000000000001000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff88810ce8a800 R12: 0000000000000000 R13: ffff888000000000 R14: 0000160000000000 R15: 0000000000001000 FS: 00007f7bd0e156c0(0000) GS:ffff888237c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020670000 CR3: 0000000100fe7000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: copy_page_from_iter lib/iov_iter.c:441 [inline] copy_page_from_iter+0x7d/0xc0 lib/iov_iter.c:430 bio_copy_from_iter block/blk-map.c:56 [inline] bio_copy_user_iov block/blk-map.c:211 [inline] blk_rq_map_user_iov+0x4c8/0x7b0 block/blk-map.c:661 blk_rq_map_user_io.part.0+0x129/0x160 block/blk-map.c:719 sg_start_req drivers/scsi/sg.c:1817 [inline] sg_common_write.constprop.0+0x40d/0x580 drivers/scsi/sg.c:803 sg_new_write.isra.0+0x163/0x270 drivers/scsi/sg.c:770 sg_write+0x368/0x3c0 drivers/scsi/sg.c:632 do_loop_readv_writev fs/read_write.c:764 [inline] do_loop_readv_writev fs/read_write.c:749 [inline] vfs_writev+0x297/0x420 fs/read_write.c:973 do_writev+0x7f/0x160 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc0/0x210 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7f7bd1292ae9 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:00007f7bd0e150c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f7bd13b1f80 RCX: 00007f7bd1292ae9 RDX: 0000000000000002 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007f7bd12de47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000006 R14: 00007f7bd13b1f80 R15: 00007ffc1f2ca658