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================================================================== BUG: KCSAN: data-race in atime_needs_update / propagate_one write to 0xffff88821b7e46f0 of 4 bytes by task 8920 on cpu 0: propagate_one fs/pnode.c:269 [inline] propagate_one+0x3b3/0x550 fs/pnode.c:225 propagate_mnt+0x22e/0x270 fs/pnode.c:320 attach_recursive_mnt+0x66d/0x8a0 fs/namespace.c:2071 graft_tree+0x107/0x160 fs/namespace.c:2179 do_add_mount.isra.0+0x102/0x190 fs/namespace.c:2725 do_new_mount_fc fs/namespace.c:2764 [inline] do_new_mount fs/namespace.c:2818 [inline] do_mount+0x12d5/0x1590 fs/namespace.c:3141 __do_sys_mount fs/namespace.c:3350 [inline] __se_sys_mount fs/namespace.c:3327 [inline] __x64_sys_mount+0x12b/0x1a0 fs/namespace.c:3327 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88821b7e46f0 of 4 bytes by task 8905 on cpu 1: atime_needs_update+0x13e/0x360 fs/inode.c:1726 touch_atime+0x63/0x150 fs/inode.c:1748 file_accessed include/linux/fs.h:2226 [inline] generic_file_buffered_read mm/filemap.c:2243 [inline] generic_file_read_iter+0x12fa/0x18c0 mm/filemap.c:2309 ext4_file_read_iter fs/ext4/file.c:131 [inline] ext4_file_read_iter+0x103/0x360 fs/ext4/file.c:114 call_read_iter include/linux/fs.h:1901 [inline] new_sync_read+0x306/0x450 fs/read_write.c:415 __vfs_read+0x9e/0xb0 fs/read_write.c:428 integrity_kernel_read+0x97/0xe0 security/integrity/iint.c:200 ima_calc_file_hash_tfm+0x18f/0x240 security/integrity/ima/ima_crypto.c:358 ima_calc_file_shash security/integrity/ima/ima_crypto.c:389 [inline] ima_calc_file_hash+0x147/0xeb0 security/integrity/ima/ima_crypto.c:454 ima_collect_measurement+0x385/0x3b0 security/integrity/ima/ima_api.c:249 process_measurement+0x91a/0x1000 security/integrity/ima/ima_main.c:324 ima_file_check+0x7e/0xb0 security/integrity/ima/ima_main.c:440 do_open fs/namei.c:3231 [inline] path_openat+0x176e/0x23d0 fs/namei.c:3346 do_filp_open+0x11e/0x1b0 fs/namei.c:3373 do_sys_openat2+0x52e/0x680 fs/open.c:1148 do_sys_open+0xa2/0x110 fs/open.c:1164 __do_sys_openat fs/open.c:1178 [inline] __se_sys_openat fs/open.c:1173 [inline] __x64_sys_openat+0x5d/0x70 fs/open.c:1173 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 8905 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2020/06/14 17:34 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 2a22c77a | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/06/07 10:06 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 2c2b926c | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/06/03 21:47 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | a5ce5de0 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/06/03 00:33 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | f3ba1b5b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/25 00:50 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 11284182 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/18 12:11 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 24d91142 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/09 00:29 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | e97b06d3 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/05/01 10:47 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 143a10e9 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/24 12:05 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 03d97a1b | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/21 11:18 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | f20434a8 | .config | console log | report | ci2-upstream-kcsan-gce | |||||
2020/04/18 02:54 | https://github.com/google/ktsan.git kcsan | 7c3cd68e5d38 | 435c6d53 | .config | console log | report | ci2-upstream-kcsan-gce |