ci starts bisection 2023-12-20 08:54:34.414674689 +0000 UTC m=+114777.126183234
bisecting fixing commit since 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e
building syzkaller on 03d9c195daed8fca30b642783f35657aa7e32209
ensuring issue is reproducible on original commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e

testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: ceec12baa14f4a9f27411f9406b879c60daa35985e7c5c2fa9b849b78d03ab21
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 [UBSAN KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK], they are not needed
testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 75e3965ef4e0c42614a06e3c23ead0fe93cccb7f74c43ac160c785a08263919f
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 [ATOMIC_SLEEP HANG LEAK UBSAN KASAN LOCKDEP], they are not needed
kconfig minimization: base=3915 full=7645 leaves diff=2002
split chunks (needed=false): <2002>
split chunk #0 of len 2002 into 5 parts
testing without sub-chunk 1/5
disabling configs for [LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN KASAN], they are not needed
testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: b617caa5a55b55603cf2338dc40e0bd9f937cd200317c2248b8b33ff600d95c1
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: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 5de12f8251f9c130f3461033e5d76e59d2b738c1d28b61b6b0ed12433394394c
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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing commit 7d2f353b2682dcfe5f9bc71e5b61d5b61770d98e gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 23d2e2a65152005c2729d8ecfa0377d6b1a68ecdffa8d697db3f27da608df33b
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: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 446a180dbff5dd7c61bf46eb21c1f44d937f88fe3509513938937b98a6b48a1e
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: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 1eec850b25d866a0127c575d37bb4d946b1b579f7c1296851d992283361f61ea
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 [KASAN LOCKDEP ATOMIC_SLEEP HANG LEAK UBSAN], they are not needed
testing current HEAD 55cb5f43689d7a9ea5bf35ef050f12334f197347
testing commit 55cb5f43689d7a9ea5bf35ef050f12334f197347 gcc
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
kernel signature: 71fd6efdd0a621f0ceb83abc12636593f1a8f9685286e4166d3ad66f92c619d7
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: 1h10m44.672287845s (build: 43m7.862613273s, test: 23m6.274889906s)
crash still not fixed or there were kernel test errors
commit msg: Merge tag 'trace-v6.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
crash: WARNING in blk_rq_map_user_iov
------------[ cut here ]------------
WARNING: CPU: 1 PID: 1848 at lib/iov_iter.c:274 _copy_from_iter+0xc8/0x750 lib/iov_iter.c:274
Modules linked in:
CPU: 1 PID: 1848 Comm: syz-executor.0 Not tainted 6.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:_copy_from_iter+0xc8/0x750 lib/iov_iter.c:274
Code: 01 5e 08 49 29 5e 18 65 48 8b 04 25 28 00 00 00 48 3b 44 24 60 75 38 48 89 d8 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 <0f> 0b 90 31 db eb d6 4c 89 ff 48 89 de 4c 89 f2 e8 c3 49 00 00 65
RSP: 0018:ffffc900015cb948 EFLAGS: 00010246
RAX: cc790480a8a3ec00 RBX: 0000000000000000 RCX: ffffc900015cba80
RDX: ffffc900015cba80 RSI: 0000000000000021 RDI: ffff88810d2e8000
RBP: 0005088000000000 R08: 0000000000000000 R09: 0000000000000200
R10: ffff888105249840 R11: 0000000000000000 R12: 0000000000000021
R13: 0000000000000000 R14: ffffc900015cba80 R15: ffffea000434ba00
FS:  00007fb63eca16c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb63f23a0c0 CR3: 0000000106331000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 copy_page_from_iter+0xbd/0x140 lib/iov_iter.c:441
 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+0x71c/0xc70 block/blk-map.c:661
 blk_rq_map_user block/blk-map.c:690 [inline]
 blk_rq_map_user_io+0x215/0x270 block/blk-map.c:723
 sg_start_req drivers/scsi/sg.c:1817 [inline]
 sg_common_write+0x284/0x3d0 drivers/scsi/sg.c:803
 sg_new_write+0x3fb/0x490 drivers/scsi/sg.c:770
 sg_ioctl_common drivers/scsi/sg.c:935 [inline]
 sg_ioctl+0x258/0xc90 drivers/scsi/sg.c:1160
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0x6d/0xb0 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x45/0xe0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fb63f11eae9
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:00007fb63eca10c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb63f23df80 RCX: 00007fb63f11eae9
RDX: 0000000020000180 RSI: 0000000000002285 RDI: 0000000000000003
RBP: 00007fb63f16a47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fb63f23df80 R15: 00007ffc35e1c128
 </TASK>